作业帮动物濒临灭绝的原因都有什么?用英语怎么说
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动物濒临灭绝的原因都有什么?用英语怎么说
动物濒临灭绝的原因都有什么?用英语怎么说
动物濒临灭绝的原因都有什么?用英语怎么说
Humans are largely responsible when animals become extinct,endangered or threatened.Here are some reasons why animals become endangered:
1、Destruction of Habitat
Humans destroy precious habitat--the natural environment of a living thing--when they fill swamps and marshes,dam rivers and cut down trees to build homes,roads and other developments.
2、Pollution
Oil spills,acid rain and water pollution have been devastating for many species of fish and birds.
3、Hunting and Fishing
Many animals are over-hunted because their meat,fur and other parts are very valuable.
4、Exotic Species
When animals or plants arrive into a new habitat from a foreign place they sometimes introduce diseases that the native species can't fight.These "exotic" species can also prey on the native species.
I hope the answer can help you.
动物濒临灭绝的原因是它们生存的空间越来越少，它们的食物来源的改变和减少，污染造成的它们的繁殖能力减弱。