1. What animals dominated the Mesozoic Era?
A. dinosaurs
B. fish
C. mammals
D. amphibians
2. One group of reptiles, characterized by the fossil Archaeopteryx, led to the evolution of _____.
A. dinosaurs
B. birds
C. mammals
D. cephalopods
3. What likely contributed to the extinction that marks the end of the Mesozoic Era?
A. global warming
B. a meteorite collision
C. an ice age
D. none of the above