Use the Following to Answer Question(s)

question 124

Multiple Choice

Use the following to answer question(s) :
-(Exhibit: Utility) The marginal utility for the fifth unit is:

• A) 15.
• B) 10.
• C) 5.
• D) 0.

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Definitions:

Lava Flow

Magma that erupts onto the surface and flows downhill from the vent; also the solidified body of rock formed by this magma.

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.