I think the right answer to your is A I’m not for sure
A is the central nervous system and i think b is the peripheral nervous system
<span>one example would be catabolic reactions... cellular respiration is a simple one. The food is bonded chemically and when we break them apart, it releases energy. </span><span>it's such a broad question and it's hard to really say, because it's biochemistry and it all connects and builds... if that makes sense? </span>
