Across
- 3. A noun for dissolved salts in the hydrosphere
- 6. A layer of gas on the top of the stratosphere that protects us from harmful sun radiation
- 7. A description of industrial wastes and untreated sewage in water systems
- 10. Part of the Earth's atmosphere where atoms and molecules are broken by the radiation from the sun
- 13. The high energy radiation that come from the sun that is absorbed by ozone
- 14. The layer of the atmosphere that we breathe and it traps greenhouse gases
- 16. The divisions of the land on the Earth based on dominant vegetation types
Down
- 1. All the different types of life that you can find in an area
- 2. The layer of the atmosphere where jets fly
- 4. Living things that are part of the biosphere
- 5. A past event caused this, which wiped out 75% of animal life on Earth
- 8. Chlorofluorocarbons
- 9. The crust of the Earth with rock types and the upper solid mantle
- 11. The name for the waters of the Earth which includes dissolved carbon dioxide
- 12. Essential for life
- 15. The natural home or environment of an animal, plant, or other organism