Which of the following is an example of relative dating?
a. the coconino formation in the grand canyon is older than the kaibab formation.
b. the vishnu schist at the bottom of the grand canyon is 2 billion years old.
c. the dinosaurs became extinct 65 million years ago.
d. the oldest known rocks on earth are 3.96 billion years old.

1. discovered the new world balboa 2. explored the north american southwest hudson 3. his crew was the first to sail around the world vespucci 4. conquered the incas of peru cortes 5. discovered the pacific ocean columbus 6. conquered the aztecs of mexico cabot 7. discovered fishing grounds off newfoundland pizarro 8. looted spanish vessels for england drake 9. claimed the hudson river area for dutch coronado 10. priest who explored the mississippi marquette 11. man for whom the new world is named magellan