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Biology, 30.07.2019 12:30 kprincess16r

However, bed bugs have become resistant to even this chemical pesticide. what happened that allowed the bug population to increase? a) the chemicals used currently are weaker eliminate b) the chemicals no longer can penetrate bed bugs brains c) the bed bugs of today are exactly the same as the bed bugs of fifty years ago d) the bed bugs that survived the ddt years ago, reproduced new generations of chemical resistant offspring

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