Eco Crossword

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Across
  1. 3. To keep someone or something safe.
  2. 5. - When water covers dry land.
  3. 8. - To use something again and again.
  4. 9. - Dust in the air that makes it hard to see.
  5. 10. The world around us.
Down
  1. 1. The heating up of the world.
  2. 2. - Take something old and make something new.
  3. 4. When dirty harmful things get into our land sea and air.
  4. 6. - A long period with no rain.
  5. 7. - Use less of something.