A person lacking vitamin A may develop
A) hyperopia.
B) presbyopia.
C) night blindness.
D) agnosia.
Correct Answer:
Verified
Q182: Regarding vision and hearing,which of the following
Q194: When struck by light, the visual pigments
Q198: Waves of compression and rarefaction of air
Q238: Studies indicate that it takes about _
Q239: In night blindness, the person can see
Q241: Sound waves
A)are produced by vibrating objects.
B)travel in
Q242: The rhythmic movement of air molecules produces
A)
Q244: Carrots are an excellent source of _
Q245: Carrots can improve night vision
A)only in children.
B)only
Q248: The peaks of the sound wave are
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