Respuesta :
Answer:
cellular respiration, exchanged
Explanation:
the reactants of photosynthesis are the products of cellular respiration, and vice versa
Answer:
1) cellular respiration, 2) Oxygen
Explanation:
it's cellular respiration cause it's the opposite of photosynthesis, and photosyntheis need it's product (carbon dioxide) and the celullar respiration need the oxygen in order to make carbon dioxide
EVERYTHING IS A CYCLE
i hope it's help!!