an increase in the algae population an increase in the fish population an increase in the mosquito population an increase in the lake's depth
I gave my students this multiple choice question: Lori owns a house next to the lake. She uses lots of fertilizer to keep her lawn green. Which impact could fertilizing her lawn have on the lake?

Only one answer is correct among these 4 choices:
- an increase in the algae population
- an increase in the fish population
- an increase in the mosquito population
- an increase in the lake's depth

Could you tell me which one is correct?

an increase in the algae population