theory of evolution

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Across
  1. 4. process where organisms develop/change/diversify from earlier forms during periods of time
  2. 7. biologist who believed organisms changed and evolved out of need and after a change in the environment.
  3. 9. a genetic change that causes new and different characteristics
  4. 10. ability of an organism to survive and reproduce in its environment
Down
  1. 1. biologist who was credited for the theory of natural selection
  2. 2. similar in structure and origin but not similar in function
  3. 3. selection process where organisms are/become better adapted to their environment tend to survive and produce more offspring
  4. 5. anatomical feature that no longer seems to have a purpose on the current form of an organism
  5. 6. theory that evolutionary change takes place through the gradual change of populations and not by sudden production of new individuals that represent a new type
  6. 8. similar structures and functions in organisms but no common ancestor.