What is the function of the kidneys?
Too remove wastes and extra water from the blood stream.
Is this a homework question? Have you tried looking up an answer to this first?
No its not a homwork question its just for general interest and I have tried looking for an answer but nowhere explains it well
Well, you didn't try very hard.... I just googled kidney function, and got bzillions of hits. Here's the first one:
The kidneys have three main functions- to excrete out metabolic products and toxins, play a key role in homeostasis by regulating the body's fluids (electrolyte balance and acid-base balance) and produce important hormones which regulate blood pressure and calcium metabolism.
Separate names with a comma.