Across
- 5. A naturally occurring colorless gas
- 7. A vital,colorless,oderless gas
- 8. A bald man that is my teacher
- 9. often called the energy currency
Down
- 1. an essentail for all life
- 2. the bodyś main sugar
- 3. vital organelles in eukaryotic cells
- 4. organisms that get energy by eating other organisms
- 6. the capacity to do work