(20 Points) How would cellular respiration be impacted in the absence of photosynthesis? Only aerobic respiration would take place.
Only anaerobic respiration would take place.
Fewer ATP would be produced during cellular respiration.
Both reactants of cellular respiration would not be available.

I think it's Only anaerobic respiration would take place

Explanation:

Hope this helps :)

Fewer ATP would be produced during cellular respiration.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

"do a testcross with a homozygous recessive plant."