Evolution

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Across
  1. 3. A diagram showing evolutionary relationships within one or more clades.
  2. 4. A person who is an expert or interested in botany or zoology, especially in the field.
  3. 5. Scientist who finds and study fossils.
  4. 7. Group of organisms that includes an ancestor species and all of its descendants.
  5. 8. Organisms changing over time.
  6. 9. An organism’s relative ability to survive and produce fertile offspring.
Down
  1. 1. The process of change by which an organism or species becomes better suited to its environment.
  2. 2. anatomy Study of the similarities and differences in the structures of different species.
  3. 5. The evolutionary history of a group of genetically related organism.
  4. 6. English naturalist scientist who formulated a theory of evolution by natural selection.