Which role do nephrons play in the excretory system?
a. filter urea and other wastes out of the blood
b. move proteins and other wastes into the bladder
c. break down proteins into urea
d. eliminate glucose and other wastes from the body
a. filter urea and other wastes out of the blood
b. move proteins and other wastes into the bladder
c. break down proteins into urea
d. eliminate glucose and other wastes from the body