Answer:
It would be the forest floor.
Explanation:
The forest floor is the lowest level, and therefore is covered by things above it.
DDT was used during second world war to control malaria among the troops and the civilians. Later, it was used as pesticide in agricultural and household practices. Due to its excessive use it entered into the food chain and its amount in the food crossed the permissible level. So, it was banned by United States.
What are you trying to ask?
So that they could adapt to there habitat