Ocean currents that move toward the poles are

cold in the northern hemisphere and warm in the southern hemisphere

warm in the northern hemisphere and cold in the southern hemisphere

cold

warm

Ocean currents that move toward the poles are - warm

The warm surface currents carry less dense water away from the Equator and towards the poles. Similarly, the cold deep ocean currents carry more denser water away from the poles toward the Equator. Few examples of warm currents are - The Gulf Stream in the North Atlantic and the Kuroshio Current in the North Pacific region.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.