Across
- 3. All animals need food in the form of *blank* to perform cellular respiration
- 7. Cellular Respiration takes place in this
- 10. Cellular Respiration uses *blank* and glucose
- 11. *blank* is necessary for life on earth
- 12. *blank* energy is required for photosynthesis
Down
- 1. Chemical changes involve the *blank* and making of chemical bonds
- 2. Carbon Dioxide enters the plant through this
- 4. Cellular respiration has how many steps
- 5. Photosynthesis has how many steps
- 6. All living things need *blank* to survive
- 8. Where does photosynthesis occur
- 9. *blank* obtain oxygen from the air by breathing