Multiple Choice
Why do we believe Mars is so small?
A) The material out of which a larger planet might have formed was already incorporated into Earth and Venus.
B) The material out of which a larger planet might have formed was scattered by the migration of the Jovian planets.
C) Tidal forces from Jupiter prevented material here from coalescing into a stable planet.
D) Like Mercury and perhaps Venus, it suffered a major collision in the early history of the solar system.
Correct Answer:

Verified
Correct Answer:
Verified
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