The primary source is Urea
fatty acids
Urea is the nitrogenous waste product filtered from the blood and excreted in the form of urine.
Kidneys filter nitrogenous waste from the blood.
crocodile excrete its nitrogenous waste through its cloacal opening
Urea
The primary by-product of protozoan excretion is ammonia
The kidneys remove nitrogenous waste from the blood and produce urine to remove the waste.
Urine contains nitrogenous wastes.
They've lost the subsequent enzymes required for catalyzing the synthesis of urea into ammonia.
Azotemia or uremia means high blood levels of nitrogenous waste.
nitrogenous waste
Urea
uric acid
yes
fatty acids
yes it is
Mollusks have a unique way of excreting nitrogenous waste. It is processed in the excretory organ and released into the water.