Multiple Choice
Which of the following observations led astronomers in the late 1800s to suspect that there might be life on Mars?
A) Seasonal variations in dark surface markings
B) The observation that its atmosphere is largely oxygen
C) The detection of liquid water on the surface of Mars
D) Unexplained flashes of light on the night side of the planet
Correct Answer:
Verified
Correct Answer:
Verified
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Q3: Which of the following kinds of features
Q4: For which solar system object has the
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Q8: The temperature on the surface of Mars
Q9: What evidence do we have that there
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