How does food provide a source of energy for living things

Food is a source to living things such as humans and animals because it gives the right amount of sodium, sugar, protein and iron to build energy and strength the go bout our lives.

When organisms consume food, it is broken down to release energy and to obtain building blocks for other molecules. During this process, oxygen is consumed and some carbon is given off as carbon dioxide ... Inside living things, some of the energy is used to maintain the body and conduct reactions necessary for life.