The answer to this is Lipids, nucleic acids, proteins, glycerol and fatty acids.
Answer:
positive feedback
Explanation:Because when you get motion that means its positive but if doesn't feel motion than that is negative.
Well it happens every six months, one in summer in June and winter December. And if i'm wrong then i understand :) <span />
Answer:
The proteins receive electrical signals from nerve cells.
Explanation:
