要上下文的
Animals are natural resources that people have wasted all through our history.
Animals have been killed for their fur and feathers,for food,for sport,and simply because they were in the way.Thousands of kinds of animals have disappeared from the earth forever.Hundreds more are on the danger list today.About 170 kinds in the United States alone are considered in danger.
Why should people care?Because we need animals.And because once they are gone,there will never be any more.
Animals are more than beautiful or interesting or a source of food.Every animal has its place in the balance of nature.Destroying one kind of animal can create many problems.
For example,when farmers killed large numbers of hawks(鹰),the farmers’ stores of corn and grain were destroyed by rats and mice.Why?Because hawks eat rats and mice.With no hawks to keep down their numbers,the rats and mice multiplied(繁殖) quickly.
大致意思是动物是一种自然资源,然后为什么人们要关爱动物,因为我们需要动物,如果动物种群消失,它们将不复存在.动物不仅仅是美丽的,有趣的,或者仅仅是一种食物.动物在平衡自然界中有它的位置.破坏一种动物会造成很多问题.