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What Is the Difference Between a Variable and an Attribute

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What is the difference between a variable and an attribute?


Definitions:

Macular Area

A small central portion of the retina, responsible for detailed central vision and high visual acuity.

Iris

The colored part of the eye that controls the size of the pupil and the amount of light that enters.

Sclera

The white outer layer of the eyeball, providing protection and giving the eye its shape.

Lens

A transparent structure in the eye that focuses light rays onto the retina to form clear images.

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