Ela

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Across
  1. 3. a device that uses pulsed laser light to measure distance to a target
  2. 6. an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study
  3. 7. an ice sample that is typically removed from an ice sheet or a high mountain glacier
Down
  1. 1. a big difference in normal climate patterns over a long period of time
  2. 2. to break off
  3. 4. a person who wanted to end slavery, especially in the United States before the Civil War
  4. 5. to maintain something in its original or existing state