It has to be in living organisms, it has to have a plasma membrane and it has to arise from a previously existing cell.
Answer:
The water cycle
Explanation:
When water is evaporated whatever dirt or salt particles were in it do not get evaporated with it. So when it falls back to earth (as rain, snow, hail, ect.) it is technically pure, until something is added to it.
Answer:
Polymer
Explanation:
Monomers can be linked together to form a polymer
Is there multiple choice options? if there isn’t, then the answer is that they can destroy large buildings, uproot trees and hurl vehicles hundreds of yards. They can also drive straw into trees. Damage paths can be in excess of one mile wide to 50 miles long.
A. DNA molecules, I think