Question

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

Answer 1

D. the dinosaurs appeared and came to dominate large-scale terrestrial life

Step-by-step explanation:

The Mesozoic Era is a time in Earth history when

D. the dinosaurs appeared and came to dominate large-scale terrestrial life

The Mesozoic Era is the dinosaur age and lasted from approximately 250 to 65 million years ago for nearly 180 million years. This era includes three well-known periods called the periods of Triassic, Jurassic, and Cretaceous. A mass extinction marked the Mesozoic Era's beginning and end.