Honestly this subject is really really hard .. I wish I could help sorry
B) chemical energy is produced in the form of ATP
There won;t be any water shortage, as it is renewable source of energy, means can be recycled. That 1,150 million kiloliters, won't transform into thin air, but still can use as a source of energy
Hope this helps!
(4) organic catalysts
The job of catalysts in chemical reactions is to make the reaction go faster by lowering the amount of energy needed to activate the reaction. If less energy is needed for the reaction to occur, then the reaction can go faster because a large energy build-up is not needed.
Shivering occurs when the core temperature of the body begins to decrease which would threaten normal body function. Shivering is a response by the body to bring back temperature back to homeostasis. Trembling is the continual involuntary contraction of muscles. Muscle activity releases heat that warms up the body. This is the reason why we sweat during physical activities as the body sheds excess heat generated by the muscles in order to maintain the homeostatic body temperatures of 37 degrees centigrade.