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Sea Birds and Seawater

Which statement best explains why some sea birds can drink seawater but humans cannot?

A. Their intestines are physically designed to filter salt from their diet.

B. Sea birds naturally have a higher intracellular osmolarity that requires excessive amounts of salt from their diet.

C. Salt glands secrete the excess salt.

D. Their nephrons are adapted to be longer to resorb less sodium to compensate for the excessive salt intake.

E. Specialized bacteria in sea bird’s intestines utilize the salts before the sea bird can absorb them.

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