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Which activates a convection current, starting the flow of a fluid? A. Cold temperatures at the North Pole B. Heated liquids at earth's surface C. iron-rich rocks in the mantle D. temperature differences in the mantle

User Egle
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Which activates a convection current, starting the flow of a fluid?

D. temperature differences in the mantle

User JP Richardson
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The answer is d. temperature differences in the mantle
User Danyella
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