लहार (Lahar) को मुख्य रूप से किससे जुड़ी द्रव्यमान-गतिशीलता (मास-मूवमेंट) विशेषता के रूप में वर्णित किया जाता है?

Intermediate-sized pyroclastic tephra fragments (measuring between 2 mm and 64 mm) are known as:

What is a major scientific consensus regarding the current state of volcano monitoring and forecasting?

What can be inferred about the challenges in forecasting volcanic eruptions?