Across
- 1. first step of photosynthesis
- 3. sphere of all earth all gases surrounding earth
- 8. organelle site of photosynthesis
- 11. second step of photosynthesis
- 14. third step of aerobic respiration
- 17. substances created during a chemical reaction made from reactants
- 19. sphere of earth all living things on earth
- 20. a situation when oxygen is not present
Down
- 2. pigment in chloroplasts used to trap light energy
- 4. first step of aerobic respiration
- 5. substances at the beginning of a chemical reaction
- 6. second step of anaerobic respiration
- 7. process of using light energy to make glucose
- 9. nutrient used in phosphate on nucleic acids
- 10. second step of aerobic respiration
- 12. type of organism that makes its own food
- 13. adenosine triphosphate
- 15. adenosine diphosphate
- 16. of all earth all of the water on earth
- 18. describes a situation when oxygen is present