B.9.B

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Across
  1. 2. The remains of an organism that are preserved in sediment or other materials
  2. 3. The fossilized remains or traces of organisms from the past
  3. 6. appearance The appearance of new species in the fossil record in a relatively short period of time
  4. 7. equilibrium The idea that species change at varying rates, with some evolving slowly and others more rapidly
  5. 8. time A time scale used by scientists to measure the age of fossils and geological formations
  6. 9. The hypothesis that evolution occurs slowly and steadily over long periods of time, with small, incremental changes
  7. 11. This term refers to the process of gradual change in a species over time
Down
  1. 1. The gradual formation of new species from an existing species
  2. 4. Theory that species evolve slowly and steadily over time
  3. 5. Type of fossil that provides evidence of the behavior of ancient organisms
  4. 10. A pattern where species remain relatively unchanged for long periods