<span>About the conservation of energy. Suppose you are in a vacuum and you bunch a basketball. You will notice that no matter how much you will leave the ball bunching the ball will never stop. That happens because the ball develops both potential and kinetic energy, the sum of those two give us the mechanical energy which remains constant. We have to suppose that friction is zero otherwise you have to count for thermal loses. </span>I hope that this is the answer that you were looking for and it has helped you.
B. Cytoplasm- is made up of a jelly-like substance composed of mainly water and found between the cell membrane and nucleus. The cytoplasm makes up most of the body cells which hold organelles as well.
The answer to your question is Mutualism.
All of these birds share a common ancestor
Hope i helped :3
(a) very frequent use of something so that it stops being effective; an over-use.
