15. During cellular respiration, some of the energy stored in the bonds of glucose molecules
is transferred to high energy bonds in ATP. The remainder of the energy is transformed
into
a. Light
b. Heat
c. Chemical energy
d. Reducing power

b.

Explanation:

The remainder of the energy is transformed into heat!

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).