- Food contains nutrients for living things
- Nutrients are a source of energy for living things
- Therefore, food is a source of energy for living things

- Food is a source of energy for living things
- An animal is a kind of living thing
- Therefore, food is a source of energy for animals

Therefore, food is a source of energy for animals
Animals use resources in the environment to survive. Which of the following resources does an animal use for energy?
- An animal is a kind of living thing 
- Food contains nutrients for living things 
- Nutrients are a source of energy for living things