Volcanic eruptions can trigger lahars that may occur long after the volcanic activity has ceased. The simplest definition of a lahar is?

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Quizplus · Accepted Answer

A lahar is a debris flow that can be triggered by volcanic activity, such as a volcanic eruption. It consists of a mixture of water, rock, and volcanic ash that flows down the slope of a volcano, often within the channels of existing rivers. Lahars can be triggered by the melting of snow and ice on the volcano, heavy rainfall, or even earthquakes.

Volcanic Eruptions Can Trigger Lahars That May Occur Long After