i think the answer is A. water flowing downhill and spinning turbines
Ethers can't form hydrogen bonds with water and so have a low solubility
hope that helps
Parents SHOULDN'T avoid sharing their own mistakes with children.
Answer:
Period and groups are different because
PERIODS are the number of shells
I.e in lame man words the no of circles when drawn an element
GROUPS : these are the number of electrons in the outermost shell
Groups determine the valency*
