Natural Selection

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Across
  1. 3. Charles __________ developed the theory of natural selection
  2. 4. Favorable ___________ are passed onto the offspring of a species resulting in evolution
  3. 7. _________ occurs between individuals within a species
  4. 9. A group of organisms of the same species living in a particular area at the same time
  5. 10. Variations within a species is caused by a ____________
Down
  1. 1. If natural selection does not occur it will often result in a species becoming _________
  2. 2. An inherited characteristic that improves an organisms ability to survive in a particular environment
  3. 5. All of the changes that have transformed life over a period of time
  4. 6. Darwin noticed a variation between ___________ on the Galapagos islands
  5. 8. A class of individuals having some common characteristics