Fact 1: Heterotrophs get food by eating other living things.

Fact 2: Animals are heterotrophs, or other-feeders.

Given the two facts above, answer the question "What do animals use as a food course?" with the following options: 
- it keeps an organism warm
 - water
 - Generating heat
 - Organic compounds
 - deadwood
 - light energy
 - other living things
 - inorganic


 

       other living things  