density, it's a mass per unit volume
Pros: Might someday cure disease, might someday increase crop yeild, might create things that can be of our use.
Cons: Genetic engineering could cause food allergies, have bad side affects, it could kill animals over time.
I hope this helps.
A contractile vacuole works just the same as the name suggests, in that it expands and contracts. The point of the contractile vacuole is to pump water out of the cell through a process called osmoregulation, the regulation of osmotic pressure. It occurs in freshwater protists, but mainly in the kingdom Protista as a whole.
B, because in all truth and honesty, stress is truly inevitable. Also, use process of elimination. I hoped that helped :)
I think the answer you are looking for is calorie with a lowercase "c". However the substance should be water.
