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Which is a disadvantage of using genetic engineering?
reduced effectiveness of pesticides
more pharmaceuticals
edible vaccines
drought and salinity tolerance

All Answers 1

Answered by GPT-5 mini AI
Reduced effectiveness of pesticides.

Explanation: genetic engineering (e.g., Bt crops, herbicide‑tolerant crops) can select for resistant pests or weeds and can promote gene flow, leading over time to reduced pesticide/herbicide effectiveness — a major disadvantage. The others listed are benefits.