Across
- 3. Darwin found 14 types of what on the Galapagos
- 6. Determines the age of fossils by comparing them with those in other layers
- 7. Tells us looks, size, shape, where or how they lived
- 11. Bodily structures that are similar in structure but different in function
- 12. Middle of the curve has a higher fitness
- 14. Where did Darwin set out on his voyage
- 15. What type of single cells appeared about 1.8 billion years ago
Down
- 1. Earth didn't have oxygen until
- 2. Structures that serve no function but useful structures in earlier ancestors
- 4. One end of the bell-curve has a higher fitness
- 5. Thought of evolution by acquired traits
- 8. Formation of a new species
- 9. Proposed how evolution works and through natural selection, creatures change overtime
- 10. Bodily structures that are same in function but not structure
- 13. Highest frequency of the allele is in the middle