Sam and Natalee's Evolution Crossword

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Across
  1. 1. theory that characteristics can be directly inherited
  2. 4. the slow changes a species experiences over time
  3. 5. the difference of individuals in same species
  4. 11. an organism's ability to survive and reproduce in it’s given environment
  5. 13. theory that states how over millions of years, organisms evolved
  6. 14. theory that evolution happens steadily and slowly
  7. 15. the last common ancestor between shared organisms
Down
  1. 2. change in genetic material in the cell
  2. 3. the impression of an organism from the past
  3. 6. a trait or strength helps an organism survive
  4. 7. preserved in sedimentary rocks, newer fossils are found on closer layers, while older fossils are found in the lower layers
  5. 8. part of DNA that codes specific traits
  6. 9. when all organisms of a species are dead
  7. 10. process where better adapted individuals are more likely to survive and reproduce
  8. 12. a group of similar organisms that can reproduce together