What is tephra?
Ash, dust and rock fragments ejected during a volcanic eruption.
2 )
Destructive fast-flowing mudflows down the slopes of a volcano.
3 )
Large waves generated by seismic activity.
4 )
Rapidly moving clouds of hot ash, gas and lava erupted from a volcano.
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!