Water

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Across
  1. 2. in a gallon of average ocean water, there is about 1 cup of _____.
  2. 4. earth is in our _________ covering 71 percent of the surface of our planet.
  3. 5. But solid water, or ice, is actually ____ dense.
Down
  1. 1. Over 68 percent of Earth’s _________ is locked up in ice and glaciers
  2. 3. Comets are mostly water _____.
  3. 6. there can be a lot going on in a ________ drop of ocean water.