S1 문장의 [______]에 들어갈 단어는?

난이도 고난도 · 힌트를 덜 열수록 높은 점수 (현재 5점)
The reduction of minerals in our food is the result of using pesticides and [______] that kill off beneficial bacteria, earthworms, and bugs in the soil that create many of the essential nutrients in the first place and prevent the uptake of nutrients into the plant.