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A main one is that it caused thin-walled (devastatingly fragile) bird egg-shells.

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13y ago
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14y ago

It is very good at killing malarial mosquitos. Just make sure it doesn't get into your food.

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7y ago

DDT is toxic and is destroyed naturally in the environment only after a very long time.

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Q: Why might there be problems with spraying ponds and lakes with ddt?
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