Question

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

Answer 1

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

D. temperature differences in the mantle

Answer 2

The answer is d. temperature differences in the mantle