Across
- 7. outputs (what comes out)
- 9. first stage of cellular respiration (sugars break down)
- 10. another word for the ground & land
- 12. eating
- 13. cells make CO2, H20, & engery
- 14. second stage of cellular respiration
- 15. inputs (what goes in)
Down
- 1. plants make oxygen
- 2. breaking down dead animals & plants
- 3. another word for living things on land
- 4. burning of fossil fuels
- 5. another word for air
- 6. forming fossils over millions of years
- 8. how carbon moves through the earth & atmosphere
- 11. from the sun