How could biotechnology lead to a decrease in the use of pesticides?

Biotechnology has made it possible for us to produce genetically modified crops, which can be induced with all the desirable traits that we want. This makes it possible for us to produce pests resistant crops that will not be susceptible to the effects of pests during their planting period. This will drastically reduce the needs for pesticides for these crops.

Abay where the river empties into the sea

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem