What is the difference between h2 and h2o

What happens whenever a net force acts on an object

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

What is the one part of the nucleotide  that differs among the other different nucle  tides?