outline

thesis statement:destroy the habitat of other creatures will end human beings life

1.people destroy other creatures' habitat, because we want to develop our society.
details:
in order to gain more lumber, people go to forest and cut trees. But forest,especially the jungle ,is the most critical habitat for creatures. They have a large quantity of different species. The damage done by people on forest make many creatures homeless and die out.

also people are drilling the oil from the deep sea, the oil pollution is an overwhelming disaster for sea animals, because of the outflow of oil, they can't breathe and eventually die.

2.people should notice that these creatures are the food to other creatures.
details:
take the bee for example, they pollinate the crop and many other vegetable, which are food to the animals and human. If people continue abuse wrong way to cultivate the bee, this will cause big effect on the bee's gene and make them have problem breeding. when bees are fewer, then the vegetable and crops are fewer. Other animals who eat them will die.

3. destory them equals destory the food chain of the biosystem.
deails:
if people make some species die out, other spieces will be affected, at last the whole system will be affected. Although it's not a big problem now, it will have great effects in the future.

4. human beings are also part of the system.
details:
human beings are also living in the ecosystem, without other creatures human can't live

5.conclusion: without other creatures, human beings can not live. So human will die out at last