Photosynthesis and Respiration

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

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