Chapter 9 Pre-Reading Activity (Vocabulary)

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Across
  1. 4. a special pattern of behavior by male birds and animals of some species that is intended to attract a female bird or animal
  2. 5. benefit
  3. 6. be changed easily according to the situation
  4. 10. a formal set of ideas that is intended to explain why something happens or exists
  5. 11. the fact of being protected from something harmful
  6. 12. belonging to an early stage in the development of humans or animals
  7. 13. to develop gradually
  8. 14. a similar part of an animal, such as a wing
  9. 15. to pull or draw something towards them
Down
  1. 1. the facts, signs or objects that make you believe that something is true
  2. 2. the parts of a dead animal that have become hard and turned into rock
  3. 3. a person who studies fossils
  4. 7. a quantity or sheet of something that lies over a surface or between surfaces
  5. 8. a typical feature or quality that something/somebody has
  6. 9. a fact or a piece of evidence that helps you discover the answer to a problem