Across
- 4. Use average to get this
- 5. What plants do
- 7. A green substance in a plant
- 9. Keeps us warm and our breathing cycle
- 10. We breath it in
Down
- 1. Something that control's all of your cells
- 2. We drink it
- 3. We breath it out
- 6. Some people put it in there tea
- 8. opposite of heavy