Moon phases and seasons

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Across
  1. 2. 75%of the moon
  2. 3. getting dark
  3. 6. happens every month and is cold or hot or in between
  4. 7. how high or low the water is
Down
  1. 1. what happens to the moon ever so often and is either dark light or in between
  2. 4. getting bright
  3. 5. 25% of the moon