Environment

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Across
  1. 1. this layer protects the Earth from harmful ultraviolet (UV) radiation
  2. 3. materials or substances that are not needed or wanted, they can be recycled
  3. 7. the action of process of making land, water and air dirty or unsafe
  4. 8. to use again or more than once
  5. 10. the cutting down or burning trees without replacing them
  6. 11. energy that comes from moving water
  7. 12. rain that contains dangerous chemicals
  8. 14. an event that leads to serious negative consequences
  9. 15. a substance that can be burned to produce heat or power
Down
  1. 2. the natural world in which people, animal and plants live
  2. 4. not harmful for the environment
  3. 5. to throw small pieces of trash on the ground in a public place
  4. 6. the power that comes from the sun
  5. 9. to make new things from old materials
  6. 13. the process of increasing the temperature of the Earth's atmosphere