The Theory which supports the volcanic eruptions and earthquakes are Plate tectonics.
<u>Explanation:</u>
The word Plate tectonics is derived from the Greek and Latin word.
Plate tectonics deals with the theory with the productive and functional aspects of the lithosphere.
The Lithosphere is the outer part of the Earth which consists of mantle and crush that transforms the Earth sciences by providing a standard content for understanding mountain-building processes, volcanoes, and earthquakes and the evolution of Earth’s surface.