Apatient ( who suffers from asthma) has developed reddened blistered skin. what condition is she likely to be suffering from

A patient who suffers from asthma and has developed reddened and  blistered skin, this condition would be known as eczema.

That conduit is know as excama

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.