Examlex
Which one of the following is the price of a commodity designated for delivery today?
Pyroclastic Flow
A fast-moving current of hot gas and volcanic materials that flows down the sides of a volcano during an explosive eruption.
Eruption Column
A column of gases, ash, and volcanic rock emitted into the atmosphere during a volcanic eruption, which can affect climate and aviation.
Pyroclastic Flow
A rapid stream of heated gas and volcanic substances flowing down a volcano's slopes amid an explosive eruption.
Tephra
A pyroclastic material, regardless of size or origin, ejected during an explosive volcanic eruption; includes ash, pumice, and rock fragments.
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