Fossil Record/Evolutionary History

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Across
  1. 4. a diagram that shows the relationships between species
  2. 7. the study of fossils
  3. 8. the quality or state of having many different forms, types, ideas, etc.
  4. 9. the permanent disappearance of species from Earth
  5. 10. the natural process or result of being slowly broken down or decomposed, chiefly bacteria or fungi
Down
  1. 1. the study of the structures of organisms and their parts
  2. 2. when organisms are descended from a single ancestor
  3. 3. to change the frequency of alleles in a population over time
  4. 5. the mineralized remains of organisms showing long dead organisms lived and their bodies were structured
  5. 6. the formation of fossils as stone replaces decaying tissues