Across
- 4. pollution doesnt have a specific origin
- 5. mineral that has oxygen and silicon
- 7. explains how earthquakes &volcanoes erupt
- 9. partly decomposed organic material
- 10. resistance of a mineral to scratch
- 12. any size group of interacting parts
- 13. required industries to reduce water poll.
- 14. deposit when heavy eroded part. settle in water
- 16. molecule of oxygen containing 3 oxygens
- 17. decreased illegal dumping of hazardous waste
Down
- 1. internal structure is changed
- 2. naturally occurring,inorganic crystalline mat.
- 3. tentative explanation that is tested
- 6. well tested &widely accepted explanation
- 8. appearance of light reflected from the surface
- 9. the tendency of a mineral to break along a plane
- 11. the color of a mineral in powdered form
- 15. composed of core, mantle, and crust