Natural Selection

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Across
  1. 1. a change or difference in condition, amount, or level, typically with certain limits.
  2. 4. an incorporate laws, hypotheses and facts
  3. 7. both thought and had ideas about how life on earth got to be the way it is now.
  4. 8. received as an heir at the death of the previous holder.
  5. 9. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
  6. 11. hide or disguise
Down
  1. 2. of changing to better
  2. 3. the action or process of mutating.
  3. 5. develop gradually, especially from a simple to a more complex form.
  4. 6. is the differential survival and reproduction of individuals due to differences in phenotype.
  5. 10. Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs.