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Insecticides do not always kill off the bugs. Some survive, and pass on the toxins to whatever eats them. Then those animals carry the insecticide if they don't die first. Then, the animals who eat those get the poison. If an animal survives the poison, it does not live a happy life, though. For example: Insects consume plants coated in insecticide. Those insects are eaten by fish. The fish are eaten by eagles. The eagles' eggs are weak, due to the poison. The eggs die. Soon, the entire species is in danger. (This really happened to Bald eagles)

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17y ago

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