Natural Selection Crossword Puzzle

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Across
  1. 5. What word did charles darwin use to describe the occurrence of animals mutating for survival?
  2. 8. Animal parents passing down genes.
  3. 9. How do animals change and adapt?
Down
  1. 1. What happened to cheetahs around 100,000 years ago and still happens now?
  2. 2. How to animals change to their environment?
  3. 3. The changes animals get, which can be bad, neutral, or good.
  4. 4. Change in gene frequency
  5. 6. How often and how many times animals mate.
  6. 7. The ratio of a certain allele combined to all of the alleles in the group.