Science Crossword

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Across
  1. 2. these move tectonic plates
  2. 4. someone who uses physics to study Easrth
  3. 5. the idea the all continents were once adjoined, then gradually broke apart
  4. 6. the name of the super continent
  5. 7. a large mass of land
Down
  1. 1. the remains of an organism
  2. 3. a large steep hill