ENVIRONMENT

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Across
  1. 2. Existing in or caused by nature; not made by human
  2. 3. The planet we live on
  3. 5. A mountain that shoots out hot lava and ash
  4. 6. Frozen water that is melting due to global warming
  5. 7. A connected system, like a food web in nature
  6. 9. All the plants, animals, and things not made by people
  7. 11. Plants in forests are often used to make this to cure sickness
Down
  1. 1. A big plant with leaves and wood that produces oxygen
  2. 4. To turn waste materials into new products
  3. 8. The gas in the air that humans need to breathe
  4. 10. Water that falls from the clouds