The Loss of Biodiversity

emperor tamarin

Emperor tamarins are omnivores that eat fruits, insects, flowers and nectar. As seed dispersers for a variety of plant species, these primates are important to the health of the tropical rain forest ecosystems in which they live.

Extinction is occurring at its fastest rate in the last 100,000 years. As humans develop land for agriculture and other human needs, ecosystems are changed. Each time an acre of land is lost, species that once lived there may be lost as well. Rain forests, for example, are areas with high biodiversity, and wide swaths are being destroyed by humans. Why is biodiversity important? How does its loss affect you?

Biodiversity at Risk

Biologists estimate that there are between 10 and 100 million species living on Earth. At current rates of extinction, over half of these species will be gone by the end of this century. Across the globe, animal species that are threatened with extinction include

  • 12 percent of all birds
  • 21 percent of all mammals
  • 28 percent of all reptiles
  • 30 percent of all amphibians
  • 70 percent of all plants

Extinction is a natural process and is always occurring. Using evidence from the fossil record, the
background extinction rate is calculated to be between 10 and 100 species per year. However, the
current rate of extinction greatly exceeds that number; we lose a species every 20 minutes! Hundreds of thousands of species will disappear before we are even aware of their existence.

The Value of Biodiversity

Ecosystems provide human communities with a number of services free of charge, including air and water purification, flood and drought control, pollination of crops and other vegetation, dispersal of seeds, and nutrient cycling. These services have an economic value. If humans had to pay for ecosystem services based on their market value, biologists estimate that the cost would be approximately $33 trillion annually.

In addition, 40 percent of all medicines are derived from plants, animals, and microbes. For example, biologists are developing a painkiller based on an extract from the skin of an Ecuadorian frog. The painkiller is 200 times stronger than morphine, but is not addictive. Every time a plant, animal, or microbe becomes extinct, biologists lose whatever knowledge they might have been able to gain by studying it.

Does Biodiversity Really Matter?

Some people might suggest that biodiversity belongs in a zoo and the rest of the world belongs to humans to develop. Arguments in favor of development include the following:

  • The rise and fall of species is part of nature. No species lives forever. New species replace old ones.
  • Economic development provides jobs to people who are living in poverty.
  • Land set aside as wilderness could be better used as farmland to provide more food for a rapidly
    increasing human population.

Conservation biologists view the pro-development arguments as shortsighted. Their view is that the Earth must be maintained for future generations, not simply harvested to provide for the needs of its
current population. In fact, they argue that biodiversity plays an important part in ecosystem stability.

In general, the more species that live in an ecosystem, the more efficient and stable that ecosystem will be. For example, a rain forest can produce much more oxygen than an orchard full of apple trees. Also, many plants, including 75 percent of the world’s staple crop plants, need animal pollinators such as birds and insects to help them reproduce.

Unanswered Questions

As you have learned, biodiversity is very valuable. Yet questions remain about how best to protect biodiversity. Two of these unanswered questions include

  • How can we slow down the current extinction rate?
  • Some of the areas with the highest amount of biodiversity are located in developing countries. How can biodiversity be preserved without harming the country’s economic growth?

UPDATES: Straight from the Headlines

Clean-up crews use the Pseudomonas putida bacteria (inset) to decontaminate soil polluted by oil spills. (colored SEM: magnification 300x)


Microorganisms can be used to clean up wastes that are spilled. Some bacteria can eat substances that would be fatal to humans and most other animals. Using microorganisms to clean up a polluted environment is called bioremediation.

  1. Toxic waste, such as crude oil, is spilled on soil or in water.
  2. The waste kills most bacteria, but a few survive and adapt.
  3. Surviving bacteria feed on the toxins that were spilled and break them down. They may change the toxin to another form that is not dangerous, break the compound into smaller parts, or completely degrade it into inorganic molecules such as carbon dioxide and water.
  4. Oxygen and nutrients are added so that more bacteria will survive to help break down the toxins.
  5. When the spill has been completely broken down, bacteria die because they have run out of food.

Sometimes the needed microbes do not naturally occur in the contaminated site. When this is the case, the clean-up crew adds the specialized microbes to the site to break down the toxins.

Conservation Biologist in Action

Angel MontoyaAngel Montoya
Title: Senior Field Biologist, The Peregrine Fund
Education M.S., Wildlife Science, New Mexico State University

In 1990, Angel Montoya was a student intern working at Laguna Atascosa National Wildlife Refuge in Texas. He became interested in the Aplomado falcon, a bird of prey that disappeared from the southwestern United States during the first half of the 20th century. Montoya decided to go looking for the raptors, and he found a population of Aplomados in Chihuahua, Mexico. His work helped to make it possible for the falcons to be reintroduced to an area near El Paso, Texas.

Restoration of the Aplomado falcon became Montoya’s life work. He has monitored and researched the falcon since 1992. He helps release falcons that have been raised in captivity back into the wild, and monitors falcons that have already been released. It isn’t easy to keep tabs on a falcon, however. “Their first year they are pretty vulnerable because they haven’t had parents,” Montoya says. “Just like juveniles, they’re always getting into trouble. But I think they will do just fine.”


  1. This is a test of the response system to the biozine article.

  2. Bailey Hopkins says

    I thought this was a very neat article. I had no idea that we lost that many species so fast.The artical also makes a good point on how the ecosystems services provide so much for us and mostly just destroy it. I wish there were easier ways to protect the environments. However most of the environments use space that we could use for farming or epanding our economies. Late in the future it would be horrible if some of the most common species we have today were extinct because of what we did in our life time.

  3. I read that a species becomes extinct every 20 minutes, and I was surprised. Before I read the article,I knew that many species existed,but I really didn’t know that 10 million did. Also, I agree with conservation biologists that some people’s view on biodiversity is shortsighted. If biodiversity belonged in a zoo and the rest of the world was for humans, then they might be taking the organisms for granted.

  4. I think those people who say that not all species live forever, so who cares? are shallow. It’s not fair to think of it like that because that’s like saying, not all humans live forever, so why bother eating healthy, exercising, taking medicine, going to the doctor, etc? Think of it as a seesaw. On one side are the plants and animals and on the other is humans. Together, we live in “harmony” (because harmony is totally hacking away the rainforests and polluting Earth) and work together. Plants and animals are incredibly important to the balance of Earth, and if we offset it by destroying the other side we’ll be catapulted off the face of the Earth. Which is what some people should have done to them for saying what some of them say and doing what some of them do.

  5. Erin Fowler says

    I think this was a very interesting article. I never realized so many species existed! Also, I had no idea that the extinction rate was so high! The people who say that earth is meant for humans, they need to think that these animals were here before we were and that they are here for a reason. Who knows? Some animals that are disappearing could have the cure for cancer (which, as we all know, could really be useful to the human population). They need to put themselves in the animal’s shoes. How would they like it if a whole population of lions and tigers and bears tore down their house to make a shopping center? The section on Angel Montoya was interesting to me. He spends his life working with these fascinating birds, and he even got them to relocate to Texas! He is inspiring and people in favor of development should look at his work to see that Earth is definitely NOT a playground for human development.

  6. Sarah Sewell says

    This article is really interesting. I had absolutely no idea that species were killed off that fast. I mean every 20 minutes? Com on now. These are the type of articles that almost make me guilty that I’m a human. I mean we clear rain forests just so we can get some money from the selling of lumber and paper. Ever noticed that money is made out of paper? You know what I mean? Why can’t we just enjoy the money while it’s still on the tree? After all, isn’t a tree better than a thin sheet of green paper? Trees give us the key to life. Literally. They give us oxygen people! So why are you cutting down our life source? It says in this article that we are doing all of these things for our personal needs anyway, and I think breathing is pretty important! Also, we’re taking away many innocent, beautiful animal’s habitats. That’s like aliens invading Earth and destroying all of our towns. That’s horrible! Well, I guess what is done, is done. We can’t change the past, but we can do something to stop it from going further. I hope some day all humans will see how important every single species is to the balance of life on Earth, and that we need to respect every organism like we would our best friend.

  7. Amaan Marfatia says

    Extinction is going by really fast, a species every 20 min and that is crazy. Extinction is a natural process and it happens because it is survival of the toughest and smartest. We humans have come to the conclusion that we are the top but that doesn’t mean we should let other organisms lower that us to die off. We are the smartest and we should know that organisms depend on one another and humans happen to eat many plants and animals that don’t live in our ecosystem. We have to take care of other organisms not only to have food in the future but because we have the knowledge and power to save them and so we should. We need more people like Angel Montoya to take care of our planet and to save us from a dystopian future.

  8. Alex Armstrong says

    This article provided a lot of new information to me. I wouldn’t think that a species becomes extinct every twenty minutes. All you really hear about are the dodo, carrier pigeons, etc., but you never think about any insects, plants, or microorganisms dying off. They are equally important to us as any other species would be. Like how about that frog skin? If that animal dies of, we can’t do any more research on the skin to make the nonaddictive, super powerful painkiller. It could be revolutionary! What also grabbed me was that when they said that all species die off. How long do you think it could be before the human race kicks the bucket too? At this rate with all of the ecosystems being destroyed and pollution is accumulating, the end for us could be sooner than we think.

  9. Kayla Pillay says

    This article is very intriguing. The fact that we are losing a species every 20 mins is insane, and it’s sad that people aren’t even aware of it. The people who think that biodiversity doesn’t matter need a reality check. Think about what would happen if it was all put into a zoo. The “Let’s Kill Trees To Make Toilet Paper And Stuff!” business would be bustling all over the place. They would be chopping trees to clear land for farms to grow crops (that need animals to pollinate them) and factories to make things that are also made from trees. That’s just less oxygen for us to breathe! If 40% of our medication comes from animals, plants, and microbes, then we would lose 40% of our medication. Right now, there is probably an organism with the cure to a future plague. If we just keep tearing down their homes, half of our species would be gone in the next 20 years! The people of the future won’t even know what a panda or palm tree is! Also, I think the idea of the ecosystem’s “free services” is much better than the world coughing up 33 trillion dollars annually. We’d be in major debt! Poverty would be even worse! Think about what would happen if the animals said, “Hey, our population is growing. Let’s take down all the humans’ homes to make more room for us!”. We would wake up one morning to find rabbits and squirrels gnawing on our front porch. That’s exactly what we do to them! Overall, we need to stop thinking of ourselves as the kings and queens of Earth and start treating animals and plants as our equals.

  10. Alex Burton says

    Extinction is a major issue. Many people do not understand why biodiversity is important. Others don’t understand how big of a problem it is. I believe we need to find a healthy balance between development and conservation.

  11. I was amazed by this article, but not in a good way. If a species dies every twenty minutes, what are we left with? One species dies, then another one dies, and yet another, eventually knocking out the whole food web in a matter of weeks. Animals, plants, fungi, and even the tiniest of protists and bacteria live in harmony with the earth around them; if they can, why can’t we? Every species on earth is kind of like a messenger. Each one does its part and helps the world a little bit in its own way. For example, some bacteria clean up waste products, while spiders control the insect population. Although just doing their duty, the organisms behind these acts make the world a better place to live, and in a figurative sense, help the world “breathe”. But what do we humans do? Eradicate the accrued knowledge and beauty of millions of years of change just to make our current lives better? By the turn of the century, almost everything will be gone and we will be but a husk of our original strength and power. The time for change is now. We need to forget our past and look to the future.We need to save animal species, not raze them from the earth by destroying their habitats. We need to respect the earth, not throw it out like a pair of moldy socks! When we think about the future, the joy and the happiness that will emanate from the generations to come, we know what we must do.When we change the way we treat the earth, and we make extinction rates extinct, the Earth will be a better place to live.

  12. Naymish Vaghela says

    This article was very informative on the loss of biodiversity. After all that’s the title, but the main point I’m trying to make is that it is true on how fast we are losing biodiversity. This seems like a very big issue and it is. I didn’t even know we had so many species. Also the rate of losing a species every 20 minutes is crazy! I think if we all do a little something like don’t litter it can make a big difference for these species.

  13. Before i read this article i never knew that a species became extinct every 20 minutes that is just very depressing. we as people should come to a compromise with nature and try and treat all animals like we want to be treated, i mean how would we ever feel if animals killed us just to develop their society.we would feel very aggravated. so just because animals can’t speak their mind doesn’t mean that we should treat them badly.

  14. Timmy Martin says

    After reading this article, just like almost all the other articles on extinction, I feel ashamed to be a human. Sometimes I just can’t believe what I read people do. But when I saw that approximately every 20 minutes a species dies, I was in shock. Before I read this, I thought one species going extinct was crazy, but one every twenty minutes, that’s just crazy! I can’t believe how outrageous us humans can be some times. Sometimes, everyone needs to wake up from lala land and think about not just our future, but our kids and their kids’ future. We are slowly killing our world.

  15. The fact that a species is lost every twenty minutes is absolutely mind-blowing. Before I read this article, I knew that quite a bit of species are lost to extinction, but I had no idea it was to this degree. The people who don’t care that we are losing species, in my opinion, are very self-centered. It’s easy for them to say that because they’ve already gotten a chance to see these species before they go extinct, but what about the future generations? They will never get to see them with their own eyes. What’s even worse is that we, the humans, are at fault. We are the ones hurting our earth’s biodiversity, and we need to act before it’s too late.

  16. Nate "the yellow dart" olbon says

    If we lose a species every 20 minutes,

    How long will it takes our species to join them?

    at our current rate,it will take 200,000,000 minutes till all species are extinct.

    and that rate will go up.that is if we dont change right away.

  17. After I read the article, “The Loss of Biodiversity”, I felt terrible for all the species that have been wiped out , and will be wiped out because of the selfish human race. This could mean that all the animals that little kids are fascinated by today, such as giraffes, lions,etc., might not be on the face of the Earth when the the next or second generation of kids come along! In my opinion, humans shouldn’t have the right to destroy any organisms habitat. After all, humans are just another living organism trying to survive on planet Earth. I also found it ironic that the organisms that we are losing is going to cost us, ecologically and economically! But is it really going to be a loss of $33 trillion! That is allot of free services that mother nature is giving to us. I guess this proves the people that say biodiversity is just for zoos are wrong.

  18. Abby Hinkelman says

    This article was very eye-opening for me. Like it said, organisms are already becoming extinct naturally, and we are only speeding up the process. I knew that the human race was contributing greatly to the cause of animals becoming extinct, but not to this extent. Also, if we are really losing a species every 20 minutes, scientists need to make room for more improvement. After all, who knows, one of those plants or animals that became extinct could have been a cure for cancer or something to advance the current medical field.

  19. Kia Clennon says

    The fact that a species is lost every twenty minutes is absolutely mind-blowing. Before I read this article, I knew that quite a bit of species are lost to extinction, but I had no idea it was to this degree. The people who dont care that we are losing species, in my opinion, are very self-centered. Its easy for them to say that because theyve already gotten a chance to see these species before they go extinct, but what about the future generations? They will never get to see them with their own eyes. Whats even worse is that we, the humans, are at fault. We are the ones hurting our earths biodiversity, and we need to act before its too late.

  20. Cheryl Maafoh says

    When I first saw this article, I didn’t expect it to be as interesting as it was. I had no idea the species on Earth were decreasing that quickly. This raised a red flag to me. How would it be possible for a species to become extinct every 20 minutes. That just seems impossible to me! At that rate, 16,280 species would become extinct every year. Isn’t that a little too much, too fast?

    Aside from this, I completely agree with the fact that humans are greatly impacting the decreasing rate of these species. Honestly, I don’t believe the human population should be living the “extravagant” lifestyle it is today. Why is it not good enough for us to live the way they did in say, 500 B.C.? I mean, sure there were some issues like sanitation and protection, but that lifestyle still had great lessons. It taught people to work to get what they have. Today, so much of my generation is spoiled. In addition, people cared for the biodiversity, all the plants and animals. Also, all the industrialization we’ve done during the centuries have caused so many of these species to become extinct. If we just stuck to the simple basics of life, we could be alive today with so many species other generations will never know about.

    Overall, this article was quite intriguing. It completely changed my point of view on what I think about biodiversity, and it definitely made it better. I now understand all the little things humans do that may better them, but hurt other populations.

  21. Melissa Kumi says

    While reading this article, I was greatly surprised at how much biodiversity affects us. If everyone knew that biodiversity can help with medicine, droughts, floods, pollination, and nutrient cycling, I think they would see how many jobs (florists,doctors,and farmers) are in jeporady due to our selfish ways. We constantly think of ourselves and disasters we have gone thorugh such as 9/11 and the holocaust that killed so many people, but we don’t care about the millions and millions of other living organisms that have died. I wish others would read this article and be as moved as i have. Our earth is not only for us now and later generations of us, but also later generations of fascinating plants and animals.

  22. When I read the article,” The Loss of Biodiversity”, I felt all the organisms tha are wiped and will be wiped because of the selfish, careless humans that suppasable rule this planet. To think that all the animals that little are are amazed by such as lions and girrafes might not exist in next geberation or two.

    Afterall, we humans are just another organism just passng throught planet Earth so what gives us the right to destroy an animals home!!!

  23. Daniel Batterman says

    I never thought that we lose a species ever 20 minutes but after i read this i can believe that it is true. due to the development of the human race the rest of the animals are dying from loss of habitat. I think that angel montanya is doing a great deed helping the falcons that are extinct in South U.S. because i have always loved falcons. Something that stumps me however is that people still dont care about the loss of biodiversity.

  24. Paige Johnson says

    I’m a little late in this, but this article really alerted me to the fact that while I’m reading a book, tons of unknown, amazing species are dying off . We’ve all heard the phrase of “Every day, a person is born and a person dies.” Just multiply that by, like, a lot and you get less than the number of species dying off because of human folly, greed, and selfishness. What right do humans have to destroy the lives of other species who were probably here long before us just because we have developed “better” technology?! Humans have accelerated evolution to the breaking point; we need to bring it down before too many species die off.

  25. Well I do think that species are dying to fast and I think they need to find a cure in this, but at the same time I agree what some of the other people say because the world should be for the human beings and the zoo should be for the wild animals and the poor animals. The farms should be for the people that need food for animals and human beings instead of the farming places are going to be just for animals.

  26. Dakota Carnes says

    we need to find a way to get resources without damaging the enviroment

  27. ashleyperry says

    we are talking about factors impacting biodiversity in biology class. this article is great.

  28. tyler swaney says

    I think this was a very interesting article. I never realized so many species existed. I had absolutely no idea that species were killed off that fast. The people who dont care that we are losing species, in my opinion, are very self-centered.

  29. juan woods says

    i think that this article is a very good article because it tells us how many animals are increasing or decreasing and it also talks bout it is good and bad for humans and animals

  30. MeshaL shs says

    I never thought I would enjoy a article like this but it was interesting. Wow it is sad how many species die because of the human population. I would of never thought that there is that many species on Earth but there won’t be that many anymore if humans keep killing there habits.

  31. Evelyn B SHS says

    I think this is very important for animals and for the people to know the occurs whith the animals because 10 and 100 or more animals extinction very closley so we need take care more to the animals. we dont like that die to lot animals.

  32. ZinniaWright says

    This article was very interesting because it talks about how many animals increase and decrease and it talks about whats good for humans and animals.

  33. Ysabella Jackson says

    After reading this article I have learned that we as humans need to try and preserve the living creatures all around us. I was very surprised at the fact that we lose a species every 20 minutes and we might not even know it. If we want future generations to know about the creatures of the world we need to start thinking about them. The loss of biodiversity not only effects the species lost, but us as well. without biodiversity numbers of services free of charge, including air and water purification, flood and drought control, pollination of crops and other vegetation, dispersal of seeds, and nutrient cycling might not happen anymore. That would cause a very bad economy for us as humans. I think we need to do more to help save the species we have left in this world. we need to do more so that future generations can see the beautiful creatures we have in our world today.

  34. whoa…that’s sad. It should be more peaceful. We should treat animals kindly. And we should decrease the use of trees. I think that’s what’s affecting the biodiversity. Its just really sad for them to go extinct because of our cruelness.

  35. I can not believe that at the end of the century there will only be 50 million species if we keep going at the rate were going at. I also didn’t know that there are hundreds of new species every day but yet they die off so quickly we never get a chance to hear bout them. I thought it was interesting that they put microorganisms on waste to help clean the stuff up.

  36. I think that this article is very important and tells us information that we need to save animal, plants, etc. I believe we could help preserve some of these animals by creating a fenced home for them and let them reproduce.

  37. Christina Stacy says

    I knew extinction was serious, but I guess I never realized how quick and how much of the population was being affected. Extinction is being caused by many things but a major is deforestation, which is sad because the rainforest Is helping humans create new medicine and improve people’s life, but instead we are hurting the environment. It is crazy that in the next century over 70 percent of plant species is predicted to be extinct.

  38. Jared stark says

    This is cool -jared S.

  39. This article was mostly about how what humans do can effect the excinction on animals. It’s crazy how much it increases. Very interesting article.

  40. Biodiversity is important for many reasons. This includes our basic human needs and advances in medicine.

  41. This article was very informative. It is estimated that we will lose 70% of plants by the end of the century this is shocking. The ecosystem provides more resources than I ever thought and if it did not provide these resources it would cost 33 trillion annually to provide them for ourselves. We need to preserve the ecosystem to save these resources.

  42. I didn’t realize we could loose over 70 percent of all plants in the world. I also didn’t realize all the natural things we get from the ecosystem. Even getting a medicine 200x stronger then morphine.

  43. I think that we should try to preserve the environment for as long as possible, but the loss of biodiversity can only be slowed down.

  44. I agree with the points of this article but if 70% of all plants are threatened to become extinct, then soon we will need to find new ways to develop medicines unless we want to become extinct with them.

  45. It’s pretty selfish how we don’t think about the future generations. We need to keep as much biodiversity as possible to preserve earth.

  46. I think that scientists should worry about species going extinct. I think that other people should worry about this problem as well.

  47. Caitlyn Parente says

    Biodiversity is more of an issue than it is sometimes made out to be. Biodiversity is the direct cause of many of our medical cures and without it, doors will continue to be closed as far as technological and medical advances. Biodiversity is what makes Earth so beautiful and unique, so as humans, it is our job to do what we can while we can to keep biodiversity alive!

  48. Its crazy that animals go extinct every 20 minutes. I never knew extinction was such a problem.

  49. Gage Dycus says

    Humans should do more to protect the natural biodiversity of earth to preserve its beauty.

  50. I think it is very important to slow down the rate of extinction as much as we possibly can. We use observations of animals for further developments and if we continue contributing to extinction we won’t have any animals to observe.

  51. Georgiana Kennedy says

    I thought this article explained in great detail the ways we cause and create extinction. I learned a lot about the ways we ruin an ecosystems biodiversity just by living our everyday lives.

  52. Colton bone says

    It sucks, that an animal goes extinct every 20 minutes, that’s sad. We should change that.

  53. Jacob swindell says

    This is a really informative article. I nevere knew that we lost a species that often. However, it is true that loss of species is part of nature. There are definitely two sides to this article.

  54. Niya Patel says

    A lot of people don’t realize just how badly humans effect the environment. There should be a lot more moderation on how much land we can develop to save these species.

  55. Jonah Montei says

    Although preserving biodiversity could damage economic growth, people have to keep in mind that the earth does not just belong to humans. While we are considerably more advanced, that doesnt mean we should dominate the planet simply for our own good.

  56. Matthew Zlibut says

    This article was enlightening, I didn’t know it was so important.

  57. Jolie Mundy says

    After reading this article I now have a more understanding of extinction and just how quickly it is happening. I don’t think humans understand just how much animals and plants help us out. I think if more people had a understanding of this that rates would go down

  58. Sadie ignatoski says

    I actually learned that many plants and animals species are being threatened with being endangered or extinct. There need to be actions done before these animals are gone, such as finding new land.

  59. Ben Mantlo says

    This article is about biodiversity. Some species are on the verge of going extinct. I rate this article a 8 out of 10.

  60. This article was very interesting. It gave me a lot of information. Now, I am aware of the extinction of the fascinating species.

  61. Anna Culbertson says

    I think that the conservation of biodiversity is very important because of all the resources they give us. New medicines have come out using things like scorpion venom, if 20 species die out every minute how do you know that an species just died that could cure cancer. Species should be preserved in order to balance the ecosystem and provide relationships that benefit each species.

  62. Corbin sprouse says

    ThIese passages were very interesting. I perticularly like the last paragraph about the falcon species because I thought about becoming a falconer(one who hunts with falcons).

  63. Daniela iacob says

    Humans need to stop hurting the environment and find a more environmental friendly way to find resources.

  64. Dylan Pottorff says

    Really wants me to go out and help change the world and how people are affecting animals in ways they don’t even know! Had never knew that a species go extinct every 20 minutes!

  65. If we want to stop the extension of animals and plants, we need to stop taking their land. However, this task is basically impossible since the world is expanding every minute.

  66. This is really sad that everyone is just going about their normal life and no one is trying to help save some of these endangered animals and I feel like more people should devote their time to things like this

  67. Sadie Ignatoski says

    I have learned that many different species are becoming endangered or even extinct. Many people should be more aware of this, and also know what areas have many animals and plants living there before building a neighborhood or school.

  68. Nate Frazee says

    It was a great article with good information. I knew extinction was a problem, but I had no idea it was this bad.

  69. I’ve read this article, and I think that we should try to reduce the acreage that we take from these species. We should not have to take the homes from the animals. We can at least provide homes for the species, when we take their away their homes and habitat.

  70. i like that this article becauce i am interested in biology

  71. this was pretty cool to read i like the fact that we are finally doing some thing about the loss of animals

  72. kylie soldner says

    i think this is a very helpful article.

  73. Axel Quick says

    We could be the only oxygen-breathing carbon-based life in the entire universe. When a species goes extinct, something is lost from the universe forever.

    Cutting down trees and burning forests won’t get us more resources. Not for the poor, anyway. Notice that the companies who take so many trees down don’t use the wood to make houses for the homeless. They aren’t taking the food from the extra farmland and giving it to the poor. They’re just shipping it to richer countries who can pay them big $$$ for it.

    There’s enough food to feed all the people in the world. In North America particularly, our meals are huge, and we have an obesity crisis. That excess food could be sent to poorer countries. We waste so much, so often, when proper distribution could feed so many more people.

    This makes me disgusted to be a human at all. Why are we so horrible?

  74. Jordan petitt says

    The painkiller is 200 times stronger than morphine, but is not addictive. Every time a plant, animal, or microbe becomes extinct, biologists lose whatever knowledge they might have been able to gain by studying it.

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