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1
which planet comes before mars?
Earth
Sun
Saturn
Jupter
2
Which gas is most abundant in Mars' atmosphere?
Carbon Dioxide
Oxygen
Nitrogen
Hydrogen
3
Mars has how many known moons?
5
7
2
0
4
How long does it take Mars to make a complete orbit around the Sun?
687 days
5 days
365 days
876 days
5
Is it possible to see Mars from Earth with the naked eye?
Sometimes
Yes
No
Yes, when in opposition
