Geological Time Scale

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Across
  1. 3. - cuts across a sequence of rocks
  2. 5. - What planet we live on
  3. 8. - Exact
  4. 9. - Old remains in a rock
  5. 10. - Remaining isotope to decay
Down
  1. 1. - Sequence of rocks, old to new
  2. 2. - What on a clock
  3. 4. - Rock inside another rock
  4. 6. - Around
  5. 7. - How old something is