Across
- 1. to happen or take place
- 6. a gas taken in by plants for photosynthesis
- 7. to take air into the lungs
- 9. the process plants use to make food
- 10. a type of solid, liquid or gas that has particular qualities
Down
- 2. the part of a cell where photosynthesis happens
- 3. a gas essential for survival
- 4. the green substance in a leaf
- 5. to let come out
- 8. to take in