Muscle tissues signaling muscle tissues to contract.
Explanation:
when it's fully charged it's a ATP and when it's runs down it's ADP
and there are times when the cells need more energy and splits off another phosphate so it goes from ADP adenoside di-phosphate, to AMP, adenosine mono-phosphate
and there you have it
I believe it's A. Premature Birth (though they all seem pretty believable)
Biochemical- apart of the second defense system
Answer:
d
Explanation:
look at it it's all over the place