While a Small or Medium-Sized City Typically Has ________ Central

question 10

Multiple Choice

While a small or medium-sized city typically has ________ central business district(s) ,it usually has ________ secondary business district(s) .

• A) one; multiple
• B) multiple; one
• C) one; two
• D) two; three

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Definitions:

Difference Threshold

The smallest amount by which a stimulus must be changed in order to produce a noticeable variation in sensory experience.

Minimum Transduction

The least amount of energy needed for a sensory system to detect a stimulus.

The Pupil

The opening in the center of the iris of the eye, through which light enters to reach the retina.

Aperture

In optics, the opening through which light travels in devices such as cameras and microscopes, controlling the amount of light that enters.