As, stated in lecture 8 of Boston University’s ES 144 class,
the earth system is composed of three major components; the climate system, the
plate-tectonic system, and the geodynamo system. The climate system involves
interactions in the atmosphere, the hydrosphere, the lithosphere and the biosphere;
the plate-tectonic system involves interactions within the lithosphere, the asthenosphere,
and the deep mantle; and the geodynamo system involves interaction within the
outer core and the inner core.

            The ocean
plays a major role in all major components of the earths system. Without the
ocean itself, water would not be evaporated into the atmosphere. This would
eliminate the water cycle as well as life on earth. Without the oceanic crust
and its tectonic plates converging with each other, no ridges on earth would
have been made, eliminating the plate-tectonic system. Without the ocean the
earth has no system. Without the ocean the earth has no life. That is why the
ocean has such a major role in our planets dynamic model.

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