Bony fishes possess a swim bladder to
A. regulate their buoyancy.
B. detect changes in water pressure.
C. cleanse the blood of toxins.
D. store urine until excreted.
E. regulate oxygen concentrations in their blood.
Answer: A
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Human vocal cords are located in the
a. glottis. b. pharynx. c. trachea. d. larynx. e. bronchus
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