EARTH

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Across
  1. 2. Fuels: What are coal, oil, and natural gas collectively known as?
  2. 4. What natural disaster involves an overflow of water submerging land
  3. 6. Temperature: How is the mean temperature of a specific time frame or location defined?
  4. 7. Dioxide: What gas is released during combustion and contributes to the greenhouse effect
  5. 8. What solid fossil fuel is formed from ancient plant material?
  6. 10. What is the term for a prolonged period of abnormally low rainfall?
  7. 12. Gas: What gaseous fossil fuel is primarily composed of methane?
Down
  1. 1. What fossil fuel is a liquid used extensively for energy and manufacturing?
  2. 3. What gas, present in the stratosphere, protects Earth from harmful UV radiation?
  3. 5. Which powerful greenhouse gas is often emitted from livestock and natural gas extraction?
  4. 8. Change: What do we call the long-term alteration in temperature, precipitation, and other atmospheric conditions
  5. 9. What term refers to the increase in Earth's average temperature due to excess greenhouse gases?
  6. 11. Effect: What phenomenon occurs when certain gases trap heat in Earth's atmosphere