Answer:
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Explanation:
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<em>To remove the last n elements from an array, use arr. splice(-n) (note the "p" in "splice"). The return value will be a new array containing the removed elements.</em>
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It depend on all such as guess ,observation ,hypothesis and etc
It was the whaling industry.
Whaling use to be the main source of oil that was used for fuel and
lighting in America which was based in the coastal communities of New England. It went into decline when oil was discovered
in 1859. Eventually it replaced whale
oil as a source of fuel and life.