有多少动物生活在如此变化多样的栖息地?
How many animals are there that live in such diverse habitats?
“大部分人没有意识到每天有多少动物死于高速公路上——他们只是没有看见”,他说。
"Most people don't realize how many animals die on the road every day - they just don't see it," he said.
错误原因:如果狗狗在小的时候没接触过多少动物或人类,以后就可能变得胆怯,并具有攻击性。
Why this is a mistake: Pets that aren't exposed to a variety of animals and people at a very young age can develop fears and aggressive behavior.
But if you throw off the environment, in this case, the animal's biology, it's drive for certain nutrients is in concert with the food it has access to.
如果让它们换个环境,这种情况下,这些动物的生理特性,即它们有多少动力去获取某些营养元素,是与其食物源状态有关的
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