The Mesozoic Era Is a Time in Earth History When

Multiple Choice

The Mesozoic Era is a time in Earth history when ________.

A) the first abundant shelly organisms appeared in the fossil record
B) Earth's interior was so hot that a solid outer crust,if present,was likely being extensively remelted
C) stable continental interiors,termed cratons,first formed
D) the dinosaurs appeared and came to dominate large-scale terrestrial life