wind patterns air temperatures the quality of water the amount of precipitation
I gave my students this multiple choice question: Scientists have monitored the amount of acid rainfall in Frederick County, Maryland, since 1982. Humans in Frederick County are affected by acid rain because acid rain alters

Only one answer is correct among these 4 choices:
- wind patterns
- air temperatures
- the quality of water
- the amount of precipitation

Could you tell me which one is correct?

the quality of water