The Environment

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Across
  1. 2. to make waste useable again
  2. 4. when you take the bus or train, you take the ... transport
  3. 6. we use ... panels to get energy from the sun
  4. 8. made without chemicals
  5. 9. to cut down trees
  6. 10. there's not a lot of tigers left, so they are ...
Down
  1. 1. to make something toxic or dirty
  2. 3. the natural world
  3. 5. when ice turns into water, it will ...
  4. 7. the ... in China has become unhealthy due to polluting factories