How is the sun used to make energy, and who uses it? how is that energy transferred to living organisms at different levels of the food web/food chain/energy pyramid?

Plants use the sun for photosynthesis to create food for themselves and animals eat plants and in return other animals eat the animal that eat the planets but each time an organism the next receives less energy : plant - 100% - small animal - 80% - large animal - 60%

Explanation: