Across
- 3. Gas needed for respiration
- 4. Instrument that records earthquakes
- 6. Push or pull
- 8. system Controls body activities
- 9. Change in species over time
- 11. Powerhouse of the cell
- 13. Smallest unit of matter
- 14. dioxide Gas released during breathing
- 16. Wearing away of land by water or wind
- 17. Pumps blood through the body
- 18. Force that pulls objects toward Earth
- 22. Basic unit of life
- 23. Molten rock on Earth’s surface
- 24. Layer of gases around Earth
Down
- 1. Breaking down of rocks
- 2. energy Energy of motion
- 3. Largest body of salt water
- 5. Process by which plants make food
- 7. Green pigment in plants
- 10. energy Stored energy
- 12. Carry blood away from the heart
- 15. Molten rock beneath Earth
- 19. Speed in a direction
- 20. Sudden shaking of Earth
- 21. Rock formed from cooled magma