5.2A Evolution and Natural Selection

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Across
  1. 2. Species have heritable genetic _____.
  2. 5. Who proposed the Theory of Evolution?
  3. 6. What is the process that drives evolution?
  4. 8. Organism with ___ traits are more likely to compete for survival.
  5. 9. ...passing down their genes to the next ___.
  6. 12. Differences among individuals result from differences in ___ material.
  7. 13. Darwin _____ a book titled The Origin of Species in 1859.
Down
  1. 1. What results in competition between offspring for resources?
  2. 3. There is ____ for limited resources such as food.
  3. 4. What is 4.6 billion years old?
  4. 7. What island did Darwin observe finches?
  5. 8. The birds appeared to have different ___ sizes and shapes.
  6. 10. An organisms __ is its ability to survive and reproduce in its environment.
  7. 11. How many factors lead to evolution through natural selection?