climate change

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