Why do the total amount of O2 and CO2 remain the same during aerobic resperiation

During this process, energy is converted from glucose, in the presence of oxygen, into numerous ATP molecules. Oxygen is the final electron acceptor of the electron transport chain in the final step of cellular respiration. Oxygen combines with electrons and hydrogen ions to produce water.

Explanation:

pls give me brainliest

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.