The Development of Agriculture Started at Least ______ Years Ago

question 31

Multiple Choice

The development of agriculture started at least ______ years ago.

• A)1000
• B)10,000
• C)100,000
• D)1 million
• E)10 million

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Definitions:

Near Point

The closest distance at which an object can be clearly focused on by the eye.

Accommodation

The ability of the eye to change its focus from distant to near objects, involving the lens changing shape.

Constricts

To narrow or become tighter, often referring to the narrowing of blood vessels or other tubular structures.

Accommodation Reflex

The process by which the eye changes optical power to maintain a clear image or focus on an object as its distance varies.