Ammonia is likely to be the primary nitrogenous waste in living conditions that include

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Ammonia is very toxic and needs to be diluted quickly with water to prevent damage to body tissues. Fish living in fresh water have an abundance of water flowing over their gills, which allows for the rapid removal of ammonia. In contrast, animals living in marine environments, such as birds and mammals, need to conserve water and cannot tolerate the large quantities of water required to excrete ammonia. These animals convert ammonia into less toxic forms, such as uric acid or urea. In a terrestrial environment, like that of crickets, ammonia would quickly build up to toxic levels and harm the organism.

Ammonia Is Likely to Be the Primary Nitrogenous Waste in Living