Some possible properties of modern insecticides are listed below, When these insecticides are used which property helps to keep environmental pollution at the lowest level?

Question

A. Accumulation in the bodies of predators.
B. Quiqly broken down by bacteria.
C. Easily washed into lakes.
D. Extremely poisonous.

Answer 1

It looks to me as though only one of these answers clearly answers the question.

Obviously, D is wrong.

Answer 2

It is? I thought it was D.
So is it A 'cuz I don't know what Accumulation means.

Answer 3

http://dictionary.reference.com/browse/Accumulate

Answer 4

Then is the answer A or B ?

Answer 5

Pesticide that accumulates in the bodies of predators remains in the environment.

If a pesticide is broken down by bacteria, it is rendered ineffective.