1. what physical process changed the geological area and composition of the earth's oceans

Tectonic plates and Continental drift

Explanation:

   We know that those who perform the movements of the crust are the tectonic plates, which are made not only by the continents, but also by the ocean floor. These plates move slowly over the mantle, moving away or approaching.

   The lithosphere or earth's crust is the outermost part, above the mantle, the more viscous part that is overheated and causes the crust to move.

   These movements are proven by techniques and studies and the use of satellites that with the aid of laser beam are able to identify and measure the displacement of tectonic plates and the movement of continents.