Examlex
The number of neutrons in a deuteron is ______________.
Cones
Photoreceptor cells in the retina of the eye that function best in bright light and enable color vision.
Lens
A curved piece of glass or other transparent materials used to refract light, focus images, and correct optical imperfections.
Transparent Outer Membrane
Refers typically to the cornea, the clear, dome-shaped surface that covers the front of the eye and contributes to the eye's focusing power.
Focus
Concentration or attention directed towards a specific object, task, or thought.
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