Your body needs more oxygen when you are exercising than when you are not exercising. why is this?

This is because the heart is panting to get more oxygen and each breath brings more oxygen in the body and more carbon dioxide is being taken out.

Explanation:

Hope it helps.

answer; i do believe that the correct answer is; ///mendelian genes are at specific loci on the chromosome and, in turn, segregate during meiosis;

"do a testcross with a homozygous recessive plant."