Ela

123456
Across
  1. 3. an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study
  2. 4. a device that uses pulsed laser light to measure distance to a target
  3. 5. to break off
  4. 6. 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 maintain something in its original or existing state