Cellular respiration and photosynthesis are complementary processes because they use each others' products and reactants.
Photosynthesis' products are cell respiration's reactants; likewise, cell respiration's products are photosynthesis' reactants.
Also, photosynthesis is known to take away carbon dioxide from the air and put in oxygen while cellular respiration does the opposite, putting in carbon dioxide while taking away oxygen.
Valence is the number of electrons an atom must gain or lose in order to consummate its outer energy level or have a stable octet in its outer shell
When Gregor Mendel asked this question, he found that different genes were inherited independently of one another, following what's called the law of independent assortment.
