Water

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Across
  1. 3. Glass enclosure for house plants
  2. 5. a source of fresh water on earth
  3. 7. Biggest ocean in the world
  4. 8. Water circulates and changes its form on earth
Down
  1. 1. Sea with very high salinity
  2. 2. Rain, hail, snow etc
  3. 4. The blue planet
  4. 6. Amount of salt present in water