Suppose We Had a Device That Allowed Us to See

question 40

Multiple Choice

Suppose we had a device that allowed us to see Earth's interior. If we looked at a typical region of the mantle, what would we see happening?

• A)Not much-on human time scales, the mantle looks like solid rock.
• B)dense metals falling downward while low- density rock rises upward
• C)a rapid, up and down churning of the material in the mantle
• D)hot molten rock rising upward throughout the mantle and cool, solid rock falling downward

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Definitions:

Economies of Scale

Cost advantages that enterprises obtain due to their scale of operation, characterized by a reduction in average cost per unit when output is increased.

Diseconomies of Scale

The phenomenon where production costs per unit increase as the volume of output increases.

Constant Returns to Scale

A situation in economics where increasing the inputs in production proportionately increases the output.

Constant Returns to Scale

The situation where an increase in all inputs by a certain factor leads to an increase in output by the same factor, showing linear scalability in production.