The volcanic form that best <span>describes large, nearly symmetrical structures composed of interbedded lavas and pyroclastic material primarily deposited from a central vent is called a <u>composite volcano. </u><u />This type of a volcano has a lot of strata (layers) of lava, ash, and other materials near its top, which is why this is the correct answer/<u> </u></span>
Although more complex animals like invertebrates and multi-celled organisms began to appear, it was very late compared to the original, simpler organisms for which the Precambrian time is characterized by.
