Answer:
I think that it is the organism in one species.
Explanation:
just because one organism is the smallest level in the answers
Answer:
I can try to help u in the comments!! if you need help asap, I would try asking the tutor. if not, I will help you as best as I can in the comments!! :)
Cellular respiration does not happen in plant cells. Only photosynthesis
The small intestine I believe