How Have Planetary Scientists Obtained Samples of Martian Rocks

question 89

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.

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Undertaken by choice or without coercion.

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A viral infection caused by the human immunodeficiency virus, which attacks the immune system and can lead to acquired immunodeficiency syndrome (AIDS) if not treated.

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