Why do your parents or grandparents most likely need glasses to read?
A) All aspects of vision gradually worsen with age.
B) The lens of the eye stiffens with age.
C) The photoreceptors of the eye are no longer so responsive.
D) The muscles that change the shape of the lens weaken with age.
E) They have spent more time reading books at close range than have younger people.
Correct Answer:
Verified
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A)flatworm
B)mollusk
C)arthropod
D)amphibian
E)human
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