is it b?

4 answers

Miki -- about 30 questions are posted an hour in the evening. I have no idea to which question you refer.

Please repost your question, along with your answer. Tell us why you think the answer is b.
A large area of land is cleared to build a new school. How does this affect the area?
A. It increases soil erosion.
B. It decreases soil erosion.
C. It increases ground water.
D. It decreases surfaces runoff.

I say Its b construction workers found the way to reduce soil erosion while bulding.
That's possible, but I think that D is the best answer.
what is a niche