Multiple Choice
Before the Mars-sized impactor struck Earth to cause ejecta that formed the Moon, Earth probably had a:
A) smaller density and slower rotation rate than it does now.
B) smaller density and faster rotation rate than it does now.
C) greater density and slower rotation rate than it does now.
D) greater density and faster rotation rate than it does now.
Correct Answer:

Verified
Correct Answer:
Verified
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