chemical insecticide remain useful only for a limited time .explain with reference to evolution
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Chemical insecticide:
Chemical insecticides are useful in fields of agriculture to get rid of different pests and insects associated with the destruction of crops. These chemical pesticides alter some of the other metabolic properties of the pests and this leads to the death of that pest.
But, with different generations of these pests, they evolve. And, with mutations, pests are born that are resistant to these pesticides. Then, these pesticides will be of no use. So, better not use these pesticides.
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