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Urine is mostly made up of water, but it also contains a variety of different chemicals and compounds, including urea, creatinine, and salts. 

The color of urine can be influenced by a number of factors, including diet, hydration level, and certain medical conditions. Normal urine is usually pale yellow or clear. 

n some cultures, urine has been used for medicinal purposes. For example, in ancient Rome, urine was used as a mouthwash and as a treatment for toothaches. 

Some animals, like camels, can survive in extremely dry environments by producing concentrated urine. Their urine is so concentrated that it can be used as a source of drinking water in emergencies. 

The smell of urine is often attributed to ammonia, but it's actually caused by a variety of different compounds, including bacteria and sulfur-containing compounds. 

Urine has been used as a source of fertilizer for centuries. It contains nitrogen, phosphorus, and potassium, which are essential nutrients for plant growth. 

In some cultures, urine has been used as a cleaning agent. For example, in ancient Rome, urine was used to clean clothing and even to bleach wool. 

Urine tests are commonly used in medical diagnosis. They can be used to screen for a variety of different conditions, including kidney disease, diabetes, and urinary tract infections. 

The average person produces about 1.5 to 2 liters of urine per day, depending on their level of hydration and other factors. That's roughly enough to fill a large water bottle!

Drinking urine is not recommended as a survival technique, despite what some people may believe. Urine contains waste products that the body is trying to get rid of, and drinking it can actually make dehydration worse.