What is the main difference between carbohydrates and proteins

Carbohydrates is an energy giving food therefore the end product is glucose, while protein is a body giving food therefore the end product is amino acid.

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.