Survival of the Fittest

12345678910
Across
  1. 2. the man credited with the theory of evolution
  2. 5. contains preserved remains of plants and animals
  3. 8. the early development stage of an organism
  4. 9. the separation of characteristics of an organism from the group
  5. 10. any change in the genetic material of an organism
Down
  1. 1. defined as the capacity to survive and reproduce in the wild
  2. 3. one of the factors that affect natural selection
  3. 4. the animal used by Lamarck to prove the Law of Use and Disuse
  4. 6. characterized as 'descent with modification'
  5. 7. the number of factors that affect natural selection