What are the main causes of convection currents in the asthenosphere?

A.
density and temperature

B.
temperature and pressure

C.
density and weight

D.
weight and pressure

Question

What are the main causes of convection currents in the asthenosphere?	
 
 A.
density and temperature
 
 B.
temperature and pressure
 
 C.
density and weight
 
 D.
weight and pressure

123ab456c · Answer

i will fan and medal

anonymous · Answer

I think I already did this question let me see.

anonymous · Answer

I am new here, but I did take the chance and I looked up the question it should be A

anonymous · Answer

here are the links http://ec2-52-0-184-118.compute-1.amazonaws.com/updates/5451568ae4b017f3f5785882

anonymous · Answer

and http://www.answers.com/Q/What_are_the_main_causes_of_convection_in_the_asthenosphere