A/C/D: All of these answers are positive effects, of human water use.
By process of elimination it must be (B) Also the run off is basically stripping the soil of the nutrients a farmer would need to grow crops, so this is incredibly bad - but a problem easily fixed.
For what exactly? For your crush??
Answer: It makes addictive with the chemicals and stuff like that also it is not healthy for your kindly
Explanation: