Question:

How come some crops and insects develop resistance to pesticides?

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How come some crops and insects develop resistance to pesticides?

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  1. Same reason that bacteria become resistant to antibiotics, survival of the fittest - strongest specimen reproduces.

    Because pesticides are not evenly distributed across fields certain forms of insects exposed to low doses can build up immunity to it and produce offspring that have this immunity.

    Given enough generations an insect can become completely immune even when exposed to high level doses.


  2. Evolution. The lifeforms that are not killed reproduce. They are the ones with resistance.

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