A Lighthouse

question 156

Multiple Choice

A lighthouse

• A)can project a light that simultaneously benefits many ships that pass.
• B)is a service that is always provided by the government.
• C)provides the feature of rivalry in the consumption of light.
• D)can easily exclude ships from using its light if the ship owners do not pay.
• E)can easily charge its users for the services provided.

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Definitions:

Arête

A sharp, narrow ridge found in glaciated or high mountain terrain, formed by the erosion of two glaciers from opposite sides.

U-Shaped Valley

A valley with a distinct U-shaped cross-section, typically formed by glacial erosion.

Tarn

A small mountain lake or pool, formed in a cirque excavated by a glacier.

Shoreline

The boundary line where land meets a body of water, such as a sea, lake, or river, constantly reshaped by the forces of nature.