If the gfr is too low, needed substances may pass so quickly through the renal tubules that they are not absorbed and instead are lost in urine. a. true b. false

The statement above is FALSE.
Glomerular filtration is the process by which the kidneys filter the blood by removing excess wastes and fluid. Glomerular filteration rate [GFR] is a measure of how well the blood is filtereed by the kidney. If the value of a GFR test is too low that indicates that the kidney is not working well.  

Yes he thought they should be left to chance why, because he thought that was the best thing to do