Genetic shields
Explanation:
From insect larvae that keep munching on pesticide-laden cotton in the U.S. to head lice that won't wash out of children's hair, pests are slowly developing genetic shields that enable them to survive whatever poisons humans give them.
https://www.pbs.org/wgbh/evolution/library/10/1/l_101_02.html#:~:text=From%20insect%20larvae%20that%20keep%20munching%20on%20pesticide-laden,them%20to%20survive%20whatever%20poisons%20humans%20give%20them.
