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here are the reaons

1.DDT is for killing bugs wich farmers use. If a insect dies a bird could eat it. But the spray on the bug is still there It spreads into the bird and the bird dies. Than othetre animals will eat and the food chain goes and each dies in seconds.

2.DDT could even spread in water. If if DDT goes on a bush I t might drip to the ocean and it is pollution

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13y ago

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