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.
In this case, "ground zero" means the starting point for an activity (like the American Civil Rights Movement). Georgia and Alabama were considered the starting points for this movement due to events such as the Montgomery Bus Boycott (after Rosa Parks refused to give up her seat to a white man) and the campaign to end segregation in Albany, Georgia. These events began the domino effect for the Civil Rights Movement, inspiring other protests and demonstrations to occur across the country.
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Follow the Four Noble Truths to enlightenment.
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B. Question the Parents further about the accident.
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