Dinosaurs died out because of an unexpected incident. But wildlife today disappears or is in danger just because humans do harm to it.
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For example, tigers are hunted for fur to make carpets so that they can only live in secure reserves; grassland is destroyed without mercy so that dust storms come into being affecting distant cities.
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Last year, scientists saw some monkeys rubbing themselves with a certain kind of insects to protect themselves from fierce mosquitoes biting.
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According to the result of the inspection, they found that the insect contains a powerful drug, so local farmers were employed to catch the insects.
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第九章: 保护野生动植物 Wildlife Protection
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