There are five classes of food, out of this five only two provides energy; these are carbohydrate and fat and oil. Out of these two, carbohydrate provides the most energy for the body in the shortest time. This is the reason why glucose, which is the end product of carbohydrate is normally given to sport men during games.
Birds, Salamanders and Sharks are all Endotherms and can manipulate their body temperatures.
Answer: 1
Explanation: Simple sugars are not formed during cellular respiration.
