Across
- 5. acids basic building block of protein
- 6. eats plants and animals
- 7. protein total amount of protein
- 9. organic compounds know as lipids
Down
- 1. eats plants
- 2. main source of energy
- 3. makes up 15-16 percent of an animal's diet
- 4. most abundant compound in the world
- 8. eats other animals