Planet A is an inner planet with no moon and hardly any atmosphere. Planet B is an inner planet with no moon but with a dense atmosphere. Which pair of planets is being described?

A.mars and venus
B.mercury and earth
C.mercury and venus
D.mars and earth

Question

Planet A is an inner planet with no moon and hardly any atmosphere. Planet B is an inner planet with no moon but with a dense atmosphere. Which pair of planets is being described?

A.mars and venus
B.mercury and earth
C.mercury and venus
D.mars and earth

supernova_sonntag · Answer

Any guesses?

legomyego180 · Answer

You can rule out B and D immediately, because we know earth has a moon.
We also know that Mars has two moons, so A cannot be possible, which means that the answer must be C.