Answer:
i believe it would be the last one "screens remove solid debris, grits and sand"
Explanation:
Answer:
Option A, The trees had become coated with soot and the dark moths were better camouflaged.
Explanation:
During the industrial revolution, bark of the trees became dark in color due to which the light colored moth were easily identifiable.
In response to this environmental change, the moth also evolved and became dark in color.
However, the total moth population of moth then constituted of both light and dark colored moths but the birds could eat only the light colored moth because they could not camouflaged themselves against the color of trees’ bark.
Hence, option A is correct
Answer:
When at rest, most blood flows to other organs. But during exercise, most blood flows to the working muscles.
