You are presented with the question "What has a negative impact on H20 quality?" and the following answer choices: 
- chickenpox
 - rainfall
 - bottled water
 - Pesticides
 - flooding
 - the amount of people drinking
 - disease
 - acid rain

Now knowing that acid rain has a negative impact on water quality and h20 Bottled water was generally consumed last year, choose the best answer.


 

        acid rain 