The Environment

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Across
  1. 2. the invisible mixture of gases that surrounds the Earth and forms its atmosphere.
  2. 5. all the surrounding living and non-living factors such as air, water, land and organisms.
  3. 6. the process of collecting and converting waste materials into new products.
  4. 7. a large body of salt water.
  5. 9. the act of using an item again.
Down
  1. 1. the introduction of harmful substances into the natural environment.
  2. 3. the rapid oxidation of a material releasing heat and light.
  3. 4. a large, dense area of land dominated by trees and other vegetation.
  4. 6. a synonym for garbage or trash.
  5. 8. the third planet from the Sun.