Darwin's Theory of Evolution

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Across
  1. 5. Any difference between organisms of the same species.
  2. 10. The process by which individuals that are better adapted to their environment are more likely to survive and reproduce.
  3. 11. Has a trunk
  4. 13. The gradual change in a species over time.
  5. 14. Similar structures that related species have inherited from a common ancestor.
  6. 15. A scientific ___ is a well-tested concept that explains a wide range of observations.
Down
  1. 1. Charles ___ was a naturalist; known for the theory of evolution by natural selection.
  2. 2. The preserved remains or traces of organisms that lived in the past.
  3. 3. Likes to chase mice
  4. 4. Producing far more offspring than can possibly survive.
  5. 6. A trait that helps an organism survive and reproduce.
  6. 7. Large marsupial
  7. 8. Flying mammal
  8. 9. A group of similar organisms that can mate and produce fertile offspring.
  9. 12. Man's best friend