Multiple Choice
Natural selection is nature's mechanism for selecting characteristics that best adapt the animal to its environment. Mammals have evolved a sophisticated mechanism for eliminating nitrogenous wastes that involves
A) secretion through cell membranes.
B) forming urea and storing it in concentrated solution.
C) producing uric acid and excreting it with feces.
D) recycling urea and using it as an energy source.
Correct Answer:
Verified
Correct Answer:
Verified
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