The menstrual<span> cycle </span>occurs<span> due to the rise and fall of hormones</span>
B
less field space will be wasted
OK well first of all I hate biology but I like writing so you can use :: The molecular reactions of cellular respiration transform Krebs cycle into the more readily available bond energy of ATP.
C looked it up on google yw
The building block of nucleic acids are nucleotides. These consist of sugar, a phosphate, and a nitrogenous base.