(needed ! )based upon the mechanics of mantle convection, which feature will most likely be formed at the blue arrow, and through which mechanism?
a. an island arc will be formed by ridge push.
b. a rift valley will be formed by subduction.
c. an ocean trench will be formed by slab pull.
d. a mid-ocean ridge will be formed by ridge push.

Where was an independent arab state created after world war i

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government

What happens to rock when acid reacts with it?