Across
- 4. outer shell of solid rock
- 5. relations of organisms to their physical surroundings
- 6. system where material or matter can be gained or lost
- 8. materials that occur in nature to be used
- 11. measure of all the salts dissolved in water
- 12. variety of life in the world or ecosystem
- 13. heat is directly transmitted through a substance when there is a difference of temperature
- 14. center of the earth
- 16. rain, snow, sleet, or hail that falls to the ground
- 17. regions of matter that make up the earth
- 19. rigid outer part of the earth
Down
- 1. regions of the surface, atmosphere, and hydrosphere of the earth
- 2. cycle where water processes through the earth and atmosphere
- 3. water collects as droplets on a surface when humid air is in contact
- 7. water comes off a surface into a gaseous phase
- 9. meeting needs of the present generation, not hurting the future
- 10. harsh chemicals in the environment
- 14. physical system that doesn't exchange matter with its surroundings
- 15. natural water from the ground, not the sea
- 18. eroding by wind or water