Hemihydrate is the answer because it is a crucial mineral in the construction of dry wall.
Answer:
to store large masses of water for survival since they live in areas of little water.
A. driving. A single instance of a nuclear weapon would cause more pollution than a single instance of driving, but while millions of cars drive everyday, nuclear weapons are very rarely detonated. All the cars in the world contribute the most to pollution, especially because some countries still don't regulate the pollutants in exhaust.
