This is actually not a question. You are going to have to re-read it. If you are asking it as a question it will look like this: "When a rigid body rotates about a fixed axis, do all the points in the body have the same angular acceleration?"
Photo Synthesis would be as plants grow from the sun or gain energy from the sun, where as Cellular Respiration is when cells divide into two or more. (I believe)
Download the app called Socratic it helps with these questions
Answer:
Potential energy is gaining all the way to the top of the hill due to the increase of height (gravitational pull) on the skateboarder. At the top of the hill potential energy will reach its highest point. Then going down kinetic energy increases as potential energy decreases.
Explanation: