Which occurrence is associated with the demise of the dinosaurs?
a. The Great Dying
b. The Cambrian explosion
c. The breakup of Pangaea
d. The K-T event
Question 2
The oldest known fossils of the genus Homo date from about how long ago?
a. 6000 years
b. 2 million years
c. 10,000 years
d. 65,000 years