climate change
Across
- 1. expected to decline by 70% or more by 2100, endangering irrigation, drinking water, and hydropower throughout Southeast Asia.
- 4. when coral polyps eject the symbiotic algae that live with them under stressful environmental conditions.
- 5. a period of time where the Earth’s overall surface temperature is lowered enough that glaciers form at the poles and in mountainous areas.
- 7. seawater that floats on ocean surface
- 9. weakened the greenhouse effect due to the removal of carbon dioxide and oxidation of methane.
- 11. nitrogen,argon,oxygen
- 12. permanent layers of ice covering a tract of land, especially in the polar regions.
- 13. thin layer of gases that surrounds the earth
- 15. solar radiation passes through the atmosphere and warms the Earth.
Down
- 2. a very dry and less dense layer above the troposphere.
- 3. water vapor, carbon, methane, nitrous oxide, o zone, CFC's
- 6. contains the air we breathe and every aspect of what we call weather.
- 8. a layer of ash that settled on the ice sheet about 21,000 years ago.
- 10. it is water, leading the glaciers to treat
- 14. thinner atmosphere, with no greenhouse effect.