Fact 1: All animals are heterotrophs.

Fact 2: Heterotrophic bacteria derive energy from the breakdown of organic molecules.

Given the two facts above, answer the question "What derive energy from the breakdown of organic molecules?" with the following options: 
- Most plants
 - hydrocarbons
 - potatoes
 - all stones
 - all water sources
 - all mountains
 - all animals
 - Generating heat


 

       all animals  