NATURAL SELECTION

123456789101112
Across
  1. 7. A change or difference in condition, amount, or level, typically with certain limits.
  2. 9. based on the idea that all species? are related and gradually change over time
  3. 10. The action or process of adapting or being adapted.
  4. 11. French naturalist
  5. 12. A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
Down
  1. 1. The action or process of mutating.
  2. 2. Derive (a quality, characteristic, or predisposition) genetically from one's parents or ancestors
  3. 3. English naturalist, geologist and biologist
  4. 4. the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
  5. 5. Develop gradually, especially from a simple to a more complex form
  6. 6. The disguising of military personnel, equipment, and installations by painting or covering them to make them blend in with their surroundings.
  7. 8. an idea used to account for a situation or justify a course of action.