Astronomy

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Across
  1. 3. SEM
  2. 7. Causes years
  3. 8. the earth has a ___ on its axis
  4. 9. Tides Unusually strong tides
  5. 10. SME
Down
  1. 1. A nuclear reaction
  2. 2. The earth is a ___
  3. 4. Causes day/night cycle
  4. 5. Does not exist in space
  5. 6. Tides Unusually weak tides