Final answer:
Our eyes adjust the amount of light entering by changing the size of the pupil in response to light intensity.
Explanation:
Our eyes change the amount of light that enters through a process involving the pupil and the iris. The pupil, a small opening in the center of the eye, adjusts its size in response to light intensity. In bright conditions, the iris constricts the pupil, allowing less light in, while in dark conditions, the iris dilates the pupil to let more light enter.
Learn more about eye anatomy and light intake here:
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