What is the function of the peripheral system and its function? peripheral nervous system is all the nerves located outside the  central nervous system; connects the central nervous system to all  the parts of the body. 1 person found this useful.
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
What causes Volcanoes? Inside a volcano. Volcanic activity frequently occurs at the boundaries of the Earth's tectonic plates which are a series of large blocks moving between each other. The movement of these plates plays a significant role in the type of volcano formed, which influences its shape.