I think it is NAD, this ensures that the NAD can go back to glycolysis where it can again be reduced and go back through anaerobic respiration.
The penis is the male copulatory organ, so penis is the answer
Answer: I'd say C
Explanation: Small plants are at the bottom of the ecosystem, which means they have to start it out. I'm not sure tho.
Fermentation occurs in anaerobic respiration, and produces less energy than in aerobic respiration due to the lack of ETC because oxygen is not present.
2 and 3. Seeing as only 1 parent is producing the offspring, it’s bound to have be identical. Flowering plants can be produced asexual or sexually so it has to be 2 and 3.
