Natural Selection

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Across
  1. 2. scientist that wrote Principals of Geology and influenced Darwin
  2. 4. giant supercontinent that was formed 250 million years ago
  3. 5. any characteristic that increases and organism’s chance of survival
  4. 8. scientist that that suggested that organisms can change during their lifetime
  5. 9. structures that may not look the same but share certain characteristics and a common ancestor
  6. 10. how well an organism can survive and reproduce
Down
  1. 1. structures with reduced form or function
  2. 3. fossils used to establish the relative age of rocks
  3. 6. structures that have different structure but same function
  4. 7. the process by which organisms change over time