Mariana Trench Vocabulary

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Across
  1. 4. the highest point of a mountain
  2. 5. a very quick look
  3. 6. when living things grow well
  4. 7. from a time before history was recorded
Down
  1. 1. it controls itself
  2. 2. it can go to work underwater
  3. 3. it is needed or very important
  4. 6. a long narrow groove or ditch
  5. 8. you can control it from a distance