Science Work

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Across
  1. 3. remains, imprints, or traces of organisms one lived and how they lived
  2. 5. the surface where new rock meets older rock
  3. 6. no longer in existence, no members of the species still living
  4. 8. scientists who studys rocks
  5. 10. an organism considered an index fossil
Down
  1. 1. the number of years scince the rock formed
  2. 2. the collective group of all fossils already discovered
  3. 4. a break in the Earths crust
  4. 7. fossils of species that existed for a relatively short time
  5. 9. a rocks age compared with the ages of the rocks around it