Urine (Definition) 1  Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs.
Photo by James Devaney/Wireimage/Getty Images. Though we like to think of ourselves as living in tolerant modern times, the news that Kate Winslet is having three children with three different fathers has been greeted with a pretty shocking level of judgmental outrage.
Following months of speculation, Pippa Middleton, 33, has confirmed her royal niece and nephew will be a key part of her big day on May 20, but Kate has no official role. 1  721 comments. 2  1 video. 3  1.7k shares.