Water Pollution

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Across
  1. 2. bad things in air and water and in the ground
  2. 3. another word for ocean
  3. 4. an area of sand at the edge of a lake or ocean
  4. 5. a liquid you can swallow
  5. 6. a clear liquid
Down
  1. 1. a planet that is covered by lands and oceans.
  2. 2. an organism that lives on or in an organism of another species