Across
- 4. water
- 6. what happens when the carbon passes through
- 7. oxygen that comes through the leaf
- 8. what we breathe in
- 9. a group of atoms bonded together
- 10. a colorless, odorless gas produced by burning carbon and organic compounds
Down
- 1. processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients
- 2. process used by plants and other organisms to convert light energy into chemical energy
- 3. air
- 5. sugar