Across
- 5. a place where fresh water from a river mixes with salt water from the ocean
- 6. larges ocean in the world
- 8. heat
- 10. the changing of a gas into a liquid
- 11. to use wisely
- 12. one of the world's saltiest bodies of water
Down
- 1. the movement of water from Earth's surface into the air and back to the surface again
- 2. a form of fresh water that is found under Earth's surface
- 3. the water that falls to Earth as rain, snow, sleet or hail
- 4. most fresh water is frozen as ice
- 7. color of Earth when viewed from space
- 9. the process by which a liquid changes into a gas