while heart rate increases and decreases depending upon activity level, on average a typical persons heart rate is about___ beats per minute

9. the history of life on earth is recorded in

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

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.