ENVIRONMENT

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Across
  1. 7. the mixture of gases around the earth
  2. 9. poisonous or not pure
  3. 10. all the living things in an area and the way they affect each other and the environment
Down
  1. 1. a gas that causes the greenhouse effect, especially carbon dioxide
  2. 2. a gradual increase in world temperatures caused by gases such as carbon dioxide
  3. 3. fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago
  4. 4. to be likely to cause harm or damage to something or someone
  5. 5. great harm, damage, or death, or serious difficulty
  6. 6. dangerous
  7. 8. the reason why something, especially something bad, happens
  8. 9. the general weather conditions usually found in a particular place