Environment

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Across
  1. 2. global variation in weather
  2. 5. ____
  3. 6. a rise in Earth's temperature
  4. 7. ____
Down
  1. 1. animals and plants in risk of extinction
  2. 3. the contamination of water
  3. 4. the destruction of trees and rainforest
  4. 8. the protection of natural environment