Which major type of volcano is characterized by a steep, symmetrical conical shape and is built up over time by alternating layers of hardened viscous lava flows, volcanic ash, and other ejected material?

💡 Explanation:

Composite volcanoes, often called stratovolcanoes, are recognized by their classic steep, conical shape. They are formed by layers (strata) of highly viscous lava and pyroclastic materials, which do not flow far before cooling and stacking steeply.