Natural Selection Crossword

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Across
  1. 2. something that occurs in every generation
  2. 4. head hunters in the wild
  3. 5. the output of a cause
  4. 9. A structure found inside the nucleus of a cell
  5. 11. what genes and chromosomes are made up of
  6. 12. an unexpected gene change that will produce a new trait
  7. 15. a young bug that looks to be an adult
  8. 16. someone who is related to you from the past
  9. 19. different ages of people living at the same time
Down
  1. 1. when to adults create offspring and give it their genes
  2. 3. to live
  3. 6. different kinds of different things
  4. 7. to blend in
  5. 8. a characteristic that helps a human survive
  6. 9. something that happens that produces an effect
  7. 10. things that are alive
  8. 13. produced by 2 adults
  9. 14. the food of a predator
  10. 17. protein molecule instructor
  11. 18. an individual with a certain characteristic