A dietician/nutritionalist, if that's one of your options :)
The digestive enzyme that hydrolyzes lipids, acts as catalyst for the hydrolysis of lipid, aids emulsification of fat, and keeps tiny fat droplets suspended in the aqueous content of the gut is LIPASE. This enzyme is a subclass of esterases that breakdown fats to fatty acids and glycerol and other alcohols.
D,it never acceptable to ignore rules or etiquette but A, when no one else notices you ignored the rules.
TPA is a medicine that is used in ischemia strokes to burst a clot.
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.
