Across
- 2. Where Photosynthesis takes place.
- 5. depending on free oxygen or air
- 8. the totality of surrounding conditions
- 10. green pigments found in photosynthetic organisms
Down
- 1. he simplest structural unit of an element
- 3. a colorless, odorless gas that is essential for respiration
- 4. dioxide colorless gas formed during respiration
- 6. Specialized part of a cell
- 7. a monosaccharide sugar
- 9. any organism of microscopic size