L.S. CH 8 Section 2 How Does Evolution Hapen?

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 3. The quality of having an inferior or less favorable position (12)
  2. 4. The number of inhabitants in a given place (10)
  3. 6. English natural scientist who formulated a theory of evolution by natural selection (6)
  4. 9. The sequence of events involved in the ___ development of a species or taxonomic group (9)
  5. 10. An energetic attempt to achieve something (8)
  6. 12. Noticeable heterogeneity (9)
  7. 13. Any event that changes genetic structure (8)
  8. 15. All the means by which any alleged matter of fact whose truth is investigated at judicial trial is (8)
  9. 16. An act of traveling by water (6)

Down

  1. 1. The natural world around us (11)
  2. 2. The process of generating offspring (12)
  3. 5. A specialist in ___ (9)
  4. 7. The remains of a plant or animal that existed in a past geological age and that has been excavated (plural) (7)
  5. 8. A natural process resulting in the evolution of organisms best adapted to the environment (8)
  6. 11. Occurring among members of a family usually by heredity (7)
  7. 14. A well-substantiated explanation of some aspect of the natural world (6)