Below is a diagram of the water cycle. Local environmental scientists have collected evidence of the presence of multiple insecticides in the river. Insecticides are used on crops to help prevent crop damage from insects.

Question

Which step of the water cycle most likely contributes to the presence of insecticides in the river?

Responses
A Step Z
B Step Y
C Step X
D Step W

Answer 1

In the context of the water cycle and the presence of insecticides in a river, the most likely step that contributes to this issue is Step W, which typically represents surface runoff. When it rains or when irrigation occurs, water can wash insecticides off crops into nearby rivers and streams. Therefore, the correct response is:

D Step W