Across
- 2. layer of atmosphere closest to earth
- 4. 2nd closest atmosphere layer
- 7. speed and direction
- 9. kinetic+potential=______
- 11. a machine to make work easier
- 14. reproduction with 2 parents
- 15. body system to digest food
- 16. cell splitting into 4 new different cells
- 17. condition of Earths atmosphere
Down
- 1. transfer of water to plants
- 3. still energy
- 5. 3rd closest atmosphere layer
- 6. exerted on an object
- 8. any living thing
- 10. powerhouse of the cell
- 12. reproduction without sexual contact
- 13. moving energy