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Chemistry, 09.10.2019 05:40 keel5468

The best description of a light-year is
a) the speed of light in a vacuum.
b) the age of a one-year-old star.
c) the distance light travels in a year.
d) the time it takes light to travel from earth to the sun

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The best description of a light-year is
a) the speed of light in a vacuum.
b) the age o...
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