water

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Across
  1. 2. / large bodies of ice and snow that are found year-round and that slowly move downhill
  2. 3. / a supply of something valuable or very useful
  3. 5. / rare; present in small amounts
  4. 8. / the changing of a gas into a liquid
  5. 11. / water that is not salty
  6. 12. / takes the shape of its container and can be poured
Down
  1. 1. / the result of putting harmful substances into the air, water, or soil
  2. 4. / keeps its shape
  3. 6. / to protect a natural place or resource so it will last longer
  4. 7. / needed to change ice into water, and water into steam
  5. 9. / the changing of water from a liquid to a gas
  6. 10. / often invisible and spreads to fill a space or container