Multiple Choice
How have planetary scientists obtained samples of Martian rocks?
A) Astronauts have collected rocks and returned them to Earth.
B) Scientists have not yet been able to obtain any Martian rocks.
C) Rocks were blasted off Mars by impacts and landed on Earth as meteorites.
D) A robotic rover collected rocks for return by its lander.
Correct Answer:
Verified
Correct Answer:
Verified
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