Sea/Water Cycle Crossword

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Across
  1. 2. - a gas found in the air
  2. 3. - tiny plants and animals in the upper region of ocean
  3. 6. - the smallest part of an element
  4. 7. - a form of precipitation
Down
  1. 1. - when water vapor changes back into a liquid
  2. 4. - underground places where water collects
  3. 5. - mountainous waves caused by earthquakes