too much salt is not good,urea is toxic
When you cry, don't you excrete salt water? when you run and sweat, you excrete salt water. When you drink water and later pee, you excrete urea.
Yes they do. Many organisms including mammals, fish, fungi and microorganisms do excrete urea.
The skin uses sweat to excrete water and urea.
Urea
the urea
Neither marine nor freshwater fish excrete urine or urea; both marine and freshwater fish excrete nitrogenous waste products as pure ammonia.
Lungs excrete carbon dioxide and kidneys excrete urea and other substance
Tadpoles excrete ammonia and frogs excrete urea
Sharks excrete their urea through their skin. Hence the reason why they have a certain 'ammonia-like' kind of smell.
They are mosty urea and salt which your body doesnt need.
The end product of filtration and re-absorption in the kidneys is urine.
They've lost the subsequent enzymes required for catalyzing the synthesis of urea into ammonia.