Across
- 4. chemical formula for water
- 5. an elongated cell organelle containing chloropyll where photosynthesis takes place
- 7. roots absorb water from roots
- 8. organisms that use light energy from the sun to produce food.
- 9. plants need ? energy
- 11. humans require ? to survive
- 12. organisms that cannot use the suns energy to make food.
- 13. is photo synthesis a chemical or physical reaction
Down
- 1. the green pigment inside the chloroplast that absorbs light for photosynthesis
- 2. plants are the ? step on the food chain
- 3. respiration the breakdown of glucose molecules to release energy
- 6. the process changing light energy to chemical energy
- 7. we can not make our own food so we get it from...?
- 10. another scientific word for sugar
- 14. chemical formula for carbon dioxide