Examlex
How long did it take for the Suez Canal to be built?
Rods
Photoreceptor cells in the retina of the eye that are sensitive to low light levels, contributing to night vision.
Iris
The colored part of the eye that controls the size of the pupil and the amount of light that enters the eye.
Pupil
The black circular opening in the center of the iris of the eye, which changes size to regulate the amount of light reaching the retina.
Lens
A piece of transparent material, such as glass or plastic, that bends light rays to form an image on a camera sensor or the retina of the eye.
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