Bio Unit 2 Vocab

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Across
  1. 3. structure no longer used
  2. 5. different traits in the population
  3. 9. similar function but different structure
  4. 10. theory states best best-adapted traits survive and are passed on
  5. 13. when organisms need the same resources
  6. 15. adaption allowing an organism to blend into its environment
  7. 18. structure that is similar but has a different function
Down
  1. 1. a species reproduces more than it needs
  2. 2. a species that no longer exists
  3. 4. trait allowing an organism to survive better in the environment
  4. 6. the number of same species in one area
  5. 7. causes a new trait in the DNA
  6. 8. characteristic passed on through DNA
  7. 11. changes over time
  8. 12. decision of trait in an environment
  9. 14. organisms that are grouped and mate together
  10. 16. adaption making a species appear like a harmful one
  11. 17. choosing a mate based on appearance