Across
- 2. change of a liquid to a gas
- 3. the use of resources
- 5. the outermost layer of Earth
- 9. relating to the whole world
- 11. to soak up
- 13. the sum of all living things on Earth
- 15. a rising body of water
- 16. when plants lose water vapor through leaves
- 18. rain, snow, or hail that falls from clouds
- 19. Earth's water and ice
- 20. the force that causes objects to attract each other
- 21. the layer of Earth between the crust and the core
- 22. air around the earth
Down
- 1. rock formed when lava or magma cools
- 4. when water soaks into the ground
- 5. a repeated sequence of events
- 6. process of sediments being moved
- 7. the permanent disappearance of a species
- 8. the process of rocks being broken down
- 10. very small
- 12. the solid part of the earth
- 14. average per person
- 17. a prediction of future events