Urine is the liquid waste product of the body that is excreted by the urinary system, and nitrogenous wastes leave the body in the urine. Given these facts, how are nitrogenous wastes excreted among the following options:
- solutes
 - wetland
 - salmon
 - urine
 - soil
 - harmful
 - gills
 - CO 2


 

    urine     