Why are birds able to concentrate their urine hyperosmotic to their blood plasma?
A) Their kidneys have loops of Henle.
B) They excrete uric acid.
C) They have an exceptional ability to excrete Na+.
D) They have loopless nephrons.
Correct Answer:
Verified
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A) Some birds
B)
A) birds.
B) crustaceans.
C) marine
