GLACIERS (no books allowed)

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Across
  1. 3. a global climate marked by long periods of cold temaparatures
  2. 5. the comparison of fossils in different rock layers
  3. 7. cylinders of ice drilled out of glaciers
  4. 9. the remains of ancient animals and plants
  5. 10. the transport of sediment by wind water or gravity
Down
  1. 1. average weather in an area for 30 years or more
  2. 2. certain fossils known to exist in a particular time and place.
  3. 4. a flowing mass of ice and snow that forms on top of mountains
  4. 6. the eroded sediment that is deposited as glaciers expand and retreat
  5. 8. when a species no longer has any living memebers