Select your answer:
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Eye › ViewMyopia (near-sightedness) occurs when a person’s eye is…
A. too long.
B. too short.
C. lacking in vitreous humor.
D. lacking in aqueous humor.
Breathing System › View
What is the percentage of nitrogen in inhaled air?
A. 78%
B. 21%
C. 0.04%
D. Variable