A cold front is the transition zone where a cold air mass is replacing a warmer one, (They move more slowly than warm front's.) Others are Characteristics of cold front's and they move faster than warm.
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through increasing trade Brazil's long coastline helped the country to develop
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So much salt will be left that is even enough to form a layer about 500 feet thick that covers all of Earth.
Did some research and found (C). One year
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occupational structure is the distribution of profession or jobs to the people in a society according to their social status, education etc.