True or false?
a) ____________ Orion is an asterism.
b) ____________ Earth’s atmosphere has always been about 20% oxygen, 80% nitrogen.
c) ____________ The Sun is a main sequence star.
d) ____________ The precession of Mercury’s orbit cannot be explained by Newton’s law of gravity.
e) ____________ The stellar habitable zone is the region in a solar system where planets are likely to have liquid water.
f) ____________ Ovals and hurricanes are both low pressure storms.
g) ____________ One of the days of the week is named after Jupiter.
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