Across
- 7. a gas produced by plants during photosynthesis
- 9. This law states that matter is neither created nor destroyed in chemical reactions
- 10. a gas produced by animals during cellular respiration
Down
- 1. the organelles where cellular respiration takes place
- 2. an individual living thing
- 3. a reactant of photosynthesis that enters the plant through the roots
- 4. the organelles where photosynthesis takes place
- 5. sugars that plants create during photosynthesis
- 6. two or more atoms bonded together
- 8. a requirement for all chemical reactions