Ammonia is toxic,and must be secreted as a dilute solution.Why do most fish secrete ammonia,but mammals do not?

Question

Quizplus · Accepted Answer

Fish live in an aquatic environment where water is abundant, allowing them to excrete ammonia directly into the water without the risk of dehydration. Mammals, on the other hand, need to conserve water and convert ammonia into urea, which is less toxic and can be excreted with less water loss.

Ammonia Is Toxic,and Must Be Secreted as a Dilute Solution