The Viscosity of Magma Is Lowered by __________

question 65

Multiple Choice

The viscosity of magma is lowered by __________.

• A)increasing temperature
• B)decreasing crystal content
• C)decreasing SiO₂ content
• D)All of the choices are correct.

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Definitions:

Explicit Costs

Direct, out-of-pocket expenses incurred in the operation of a business, such as wages, rent, and materials.

Implicit Cost

The opportunity cost equal to what a firm must give up in order to use resources it already owns, without having to pay rent or purchase them.

Capital

Economic resource that is used in the production of goods and services. It includes tools, buildings, machinery, and equipment.

Either-Or Decision

A decision-making process that involves choosing between two mutually exclusive options or paths.