<span>A method of processing coal to remove contaminants by mixing coal in a solution of potassium permanganate in a selected concentration range, rinsing the coal, mixing the coal in a solution of ammonia hydroxide in a selected concentration range to cause the solution to be brought into contact with the surfaces and pores of the coal, discharging the processed coal from the second reaction vessel, monitoring the process to detect when the concentration of aqueous ammonia in the second reaction vessel has fallen below the selected range, and feeding aqueous ammonia solution with an ammonia concentration in or above the selected range to the second reaction vessel to return the solution to within the selected range.</span>
Atmospheric<span> Pressure and </span>Winds<span>. The heating of the Earth's surface and </span>atmosphere<span> by the sun drives convection within the </span>atmosphere and ocean<span>. This convection </span>produces winds and ocean currents<span>.
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Answer:
Hi! your answer should be B. a societal choice for economic equity over efficiency.
Explanation:
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Most of the heat is refracted on the waters surface.