Final answer:
The correct order of distance units from smallest to largest is nanometer (nm), decimeter (dm), meter (m), and kilometer (km).
Step-by-step explanation:
The distance units in order from smallest to largest are nanometer (nm), decimeter (dm), meter (m), and kilometer (km).
Using the provided example conversions:
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- 1 nanometer (nm) = 10-9 m
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- 1 decimeter (dm) = 0.1 m
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- 1 meter (m) is the base unit of length in the metric system.
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- 1 kilometer (km) = 1,000 m
With these conversions, it is evident that the correct order from smallest to largest is nm, dm, m, km.