How do the aquatic animals like fish excrete their cell waste ?

A group os aquatic animals is

Aquatic animals like fish excrete their wastes in gaseous form as

Marine teleost fish excrete

Aquatic animals respire by-

Almost all the aquatic animals excrete ammonia as the nitrogenous waste product. Which of the following statements is not as agreement with this situation?

Almost all the aquatic animals excrete ammonia as the nitrogenous waste product. Which of the following statement is not in agreement with this situation

Birds excrete nitrogenous waste as

Fishery is an industry devoted to the catching, processing or selling of fish, shellfish or other aquatic animals. Some of the very common freshwater fishes include

(a). Explain the pH change as the cause of tooth decay. How can tooth decay caused by pH cahnge be prevented? (b). Explain how pH change int eh lake water can endager the lives of aquatic animals (like fish). What can be done to lessen the danger to teh lives of aquatic animals in the lake?