two kidneys, two ureters, bladder, urethra
Human body has two kidneys
He did not always have two kidneys because one was not functioning when he was born, but yes. Now he has two kidneys(:
No fish, nor any organism, dies for no reason. Even if they die from "old age" it is usually due to failure of a vital organ like the heart or kidneys. Without knowing any recent symptoms, I cannot say what would have killed a fish that died seemingly "from nowhere." If you had owned him for at least two or three years, though, it may have simply been his time.
Kidneys are naturally different sizes. The right kidney is usually the biggest of the two. Kidneys are a filtering system that helps eliminate waste and control the water levels.
You need at least one of the two kidneys which most people have. Kidney(s) "filter" the blood. Poisons build up in the blood without a kidney or a mechanical substitute.
one liver and two kidneys
There are two kidneys in human body. I
No, lungs and kidneys are two completely different organs.
The kidneys would secrete elevated amounts of erythropoietin.
A person can live with only one functioning kidney if the other is diseased or has been removed. But no one can live without both kidneys, unless he undergoes almost daily treatments on a special machine called a dialysis machine. This machine is attached to the body, and cleans the blood and removes the wastes, two of the jobs that the kidneys usually do.
Like humans, cats have two (2) kidneys.