The unit that is equivalent to 3.1 x [tex]10^{-3}[/tex] meters per yer is 3.1 kilometers per year.
Scientific notation is used to condense larger numbers into smaller numbers. In order to write a number in scientific notation, the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10.
3.1 x [tex]10^{-3}[/tex] meters is equivalent to 0.0031 meters
1000m = 1 kilometer
In order to write 3.1 km as meters, you would have to divide by 1000. This is equivalent to 3.1 x [tex]10^{-3}[/tex] meters.
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