Animals are people's friends, we should protect them.
If there is no animal on earth, there would be no human. Animal is a most of the earth's food chain, if animals disappeared, we human beings will be extinct. For example: the frog disappeared, there is no animal pests to catch paddy fields, crops will not grow, humans have no food; If there is no tiger, the rabbit will excess breeding, our food is likely to be a rabbit eat didn't; If there is no owls, mice will encroach on our territory...
The earth is a big family, not lack of anyone, without animals, we humans situation, we should all band together and protect small animals.
动物是人们的朋友，我们应该保护它们。
地球上如果没有动物，就没有人类。动物是这个地球生物链的一大部分，如果动物消失了，我们人类也会灭绝。例如：青蛙消失了，就没有动物去捉稻田的害虫，农作物也就无法生长，人类就没有食物;如果没有老虎，兔子就会超额繁殖，我们的`粮食就可能会被兔子吃没了;如果没有猫头鹰，老鼠就会侵占我们的地盘……
地球是一个大家庭，缺谁都不行，如果没有动物，我们人类的处境可想而知，我们大家应该团结起来，保护小动物。
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