Which of the following gives the correct rank order for relative toxicity (most to least) of the primary nitrogenous wastes used by different animals?

A. ammonia ? urea ? uric acid
B. uric acid ? ammonia ? urea
C. urea ? uric acid ? ammonia
D. ammonia ? uric acid ? urea
E. urea ? ammonia ? uric acid


A. ammonia ? urea ? uric acid

Biology & Microbiology

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