Across
- 4. the measure of the salts dissolved in water
- 6. water held underground in the soil
- 7. warming a long term rise of the temperature of the earth
- 8. drainage basin is an area of land where precipitation collects and drains off into a common outlet
- 9. the total amount of water surrounding a planet
Down
- 1. a scientist who researches the distribution, circulation and physical properties of underground and surface waters
- 2. the rigid outer part of the earth
- 3. a transparent, tasteless, odorless, and nearly colorless substance
- 5. a mixture of oxygen-nitrogen and other gasses that surrounds the earth
- 6. a large body of ice that forms on land