home *** CD-ROM | disk | FTP | other *** search
/ Understanding the Body [Risc OS] / AcornWin_Anglia_UnderstandingTheBody.iso / shared / _c4b / res16 / res13 < prev    next >
Text File  |  1995-06-23  |  182b  |  6 lines
  1.   Excretion by the Kidneys
  2. Page 1
  3. The kidneys excrete two things:
  4. A chemical called urea.    
  5. Any excess water the body does not need.
  6. The water and the urea leave the body as urine.