Evolution

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Across
  1. 2. and individual who dies and is fossilized
  2. 3. the father of evolution
  3. 6. when bones are replaced with minerals
  4. 7. the structure of living things
  5. 10. a fossil that is a footprint or trail
  6. 11. preserved remains (or traces of)dead organisms
  7. 12. the study of rocks and how they form
  8. 14. a group of individuals who can reproduce to make similar offspring
  9. 16. gravel, sand, ash, dust, and dirt
  10. 17. a fossil used to date unknown rock layers
  11. 18. fossils usually only form in this rock
Down
  1. 1. a physical or behavioral feature of an animal that helps them better survive in their environment.
  2. 4. similar structures that evolved from a common ancestor.
  3. 5. features of different species that are similar in function but not necessarily in structure and which do not derive from a common ancestral feature
  4. 8. preserved tree sap
  5. 9. an organism slowly turned to stone through mineralization
  6. 13. using clues from index fossils and chronological layering to determine the date of unknown rock
  7. 15. Sometimes species evolve and they don’t need a certain body part anymore, but that body part stays in their anatomy.