Using volcanoes as an example explain how the earth systems react

Earth's Systems are land, water and air. When an underwater volcano erupts, lava can flow in the water (ocean) to form new land. That's an example of how these different systems interact. Also, gasses are released during an eruption which will go in the air.

a flow

Explanation:

Movement of soil and regolith that more resembles fluid behaviour is called a flow. These include avalanches, mudflows, debris flows, earth flow, lahars and sturzstroms. Water, air and ice are often involved in enabling fluid-like motion of the material.