Across
- 4. absorbed from the surrounding air or water
- 5. organelles in a plant cell that carry out photosynthesis
- 8. pores in the surface of a leaf; the site of gas exchange in plants
- 9. a source of energy
- 10. the organelles where respiration happens
Down
- 1. how living organisms produce energy using oxygen
- 2. the green pigment in chloroplasts that enables photosynthesis
- 3. a part of a plant
- 6. how cells make energy
- 7. the chemical reaction, powered by sunlight, that plants use to change carbon dioxide and