African lungfish,which are often found in small,stagnant pools of fresh water,produce urea as a nitrogenous waste.What is the advantage of this adaptation?
A)Urea takes less energy to synthesize than ammonia.
B)Small,stagnant pools do not provide enough water to dilute the toxic ammonia.
C)Urea forms an insoluble precipitate.
D)Urea makes lungfish tissue hypoosmotic to the pool.

Question

Quizplus · Accepted Answer

Small, stagnant pools do not provide enough water to dilute the toxic ammonia. Urea requires less water for excretion and is less toxic than ammonia, making it a more suitable waste product for animals living in environments with limited water supply.

African Lungfish,which Are Often Found in Small,stagnant Pools of Fresh