What activates a convection current, starting the flow of a fluid?
A.
cold temperatures at the north pole
B.
heated liquids at the earth’s surface
C.
iron-rich rocks in the mantle
D.
temperature differences in the mantle
THIS IS FOR SCIENCE
A.
cold temperatures at the north pole
B.
heated liquids at the earth’s surface
C.
iron-rich rocks in the mantle
D.
temperature differences in the mantle
THIS IS FOR SCIENCE