Answer the following question given this paragraph: 

The chemical energy that organisms need comes from food. Food consists of organic molecules that store energy in their chemical bonds. In terms of obtaining food for energy, there are two types of organisms: autotrophs and heterotrophs.


Q: Food provides what type of energy needed by organisms, which is stored in bonds?

 Choices:

- radiation energy

- caffeine

- calories

- chemical energy

A:
chemical energy
