It is either A or D. A is when a rock or area is worn away with time and water. D is when it is breaking down and wearing into the earth. i am pretty sure it is A.
During cellular respiration, glucose, in the presence of oxygen, is converted into carbon dioxide and water. During this process, the energy stored in glucose is transferred to ATP. Energy is stored in the bonds between the phosphate groups (PO4-) of the ATP molecule.
