Fractional distillation
heated crude oil enters a tall fractionating column , which is hot at the bottom and gets cooler towards the top. vapours from the oil rise through the column. vapours condense when they become cool enough.
Answer:
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<span>The transatlantic cable was important because before it was constructed, it took a week or more for news and information to get from the United States to Europe and another week or more to receive a reply. Before the transatlantic cable, news and communications had to be delivered across the ocean by ships.</span>