Spelling unit 13 crossword

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Across
  1. 5. Someone who studies biology
  2. 6. You can find a lot of this in the Great Barrier Reef
  3. 8. To have knowledge
Down
  1. 1. Something to do with the environment
  2. 2. The middle of the earth
  3. 3. The next day
  4. 4. With knowledge
  5. 7. With power