This is because the electrons are up around the oxygen more than they are around the hydrogen. The electrons are spinning around but they're around the oxygen more than they are around the hydrogen. This makes them polar because they have a charge on one end of the molecule. In a nonpolar molecule electrons are evenly distributed.
It’s is b because when your put that one together your get the and and you put all the together it get the other one
yes, his conclusion is supported by evidence from his experiment
Hematuria, or BLOOD CLOTS IN THE URINE