Which statement best describes the movement of sodium in freshwater fish?
A) Sodium is lost by excretion in urine (2-3 µmole per day) and diffusion across the body (240 µmole per day) .
B) Sodium is lost by excretion in urine (240 µmole per day) and diffusion across the body (2-3 µmole per day) .
C) Sodium is lost by excretion in urine (2-3 µmole per day) and diffusion across the body (2-3 µmole per day) .
D) Sodium is lost by excretion in urine (100 µmole per day) and diffusion across the body (200 µmole per day) .
Correct Answer:
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