Persistent pesticides are those that

require repeated high-dose use for optimum effect.

retain their popularity among U.S. farmers.

do not break down quickly or easily, and therefore become concentrated in organisms high on the food chain.

possess the greatest chemical toxicity.

Question

Persistent pesticides are those that
		
require repeated high-dose use for optimum effect.
		
retain their popularity among U.S. farmers.
		
do not break down quickly or easily, and therefore become concentrated in organisms high on the food chain.
		
possess the greatest chemical toxicity.

diana.xl · Answer

do not break down quickly or easily, and therefore become concentrated in organisms high on the food chain.?

abhisar · Answer

That's correct. Persistent pesticides stays longer in the environment as hey do not break easily.

diana.xl · Answer

thnx c:

abhisar · Answer

Welcome c:

abhisar · Answer

An example would be DDT, was used earlier  to kill mosquito