Environmnet

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Across
  1. 2. The layer in the atmosphere that protects from UV rays
  2. 4. A long period with little or no rain
  3. 5. To change from a solid (like ice) to a liquid
  4. 8. A very large amount of water
  5. 9. A large area covered with trees
  6. 10. A large natural stream of flowing water(eg.Volga,Nile)
Down
  1. 1. The gradual increase in Earth's temperature
  2. 3. Harmful materials in the environment
  3. 6. A very high and often rocky landform (eg.Everest)
  4. 7. To process used materials so they can be used again