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Chemistry, 12.08.2019 21:20, brianaduenas619
4. what is the function of the iris? a it converts light into electrical signals that are sent to the brain through the optic nerve. b it contracts and expands to control the amount of light that enters the eye. c its curved surface to focus light entering the eye. d it focuses the light onto the light-sensor cells at the back of the eye.
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4. what is the function of the iris? a it converts light into electrical signals that are sent to t...
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