Ch6: Change Over Time

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Across
  1. 2. process by which individuals that are better adapted to their environment are more likely to survive and reproduce
  2. 3. Proposed the theory of natural selection
  3. 5. theory that organisms change over time
  4. 10. A well tested idea backed by evidence and observations
  5. 12. Differences between members of the same species
  6. 13. Inherited characteristics of an organism
  7. 14. A species of birds studied by Charles Darwin
Down
  1. 1. trait the helps an organism survive and reproduce
  2. 4. When a group of organisms no longer exists
  3. 6. when more offspring are produced than can possibly survive
  4. 7. A specific class of organisms
  5. 8. Breeding animals to have certain characteristics
  6. 9. A scientist who studies nature
  7. 11. Islands where Darwin observed several species