They are totally different the Inner core is solid and hotter is made of iron, the outer core is liquid the and is made of iron and nickel
If we use mile or something else it will be hard to measure in sky .
Because the mile or meters too short for the space,
Galaxy and stars are too long far away from us if we use mile or meter,
It till be take like miliion year to measure.
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Which of the following measurements is expressed to three significant figures?
C. 5.60 km
Hope this helps!
