Biology

Question

7. How does the human eye adjust the amount of light that enters it?

a. By relaxing or contracting the ciliary muscles

b. By adjusting the opening of the iris

c. both a and b

d. none of the above

Answer

c. both a and b

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The human eye adjusts the amount of light that enters it by relaxing or contracting the ciliary muscles, which changes the shape of the lens, and by...