How did Alfred Hershey make an impact on society?

Darla spent 120.37 on groceries in January 108.45 in February and 114.86 in March What was the average monthly cost of Darlas groceries? What scientist studied x ray spectra of the elements to reveal their periodicity? How is sex therapy conducted? What is the most interesting thing about being a doctor? What is a clean smooth cut called in a medical field? Why are there gloves in a first aid kit? What does medical service code 88367 CPT? What does a chigger bite look like? On Hippocrates speech to the generals what points was he making? How long does it take for your wisdom teeth to heal? Can plucking the eyebrows affect the eyesight? Picture of hands with germs and hands without germs? Does tea tree oil go bad? What are hairdressing industry lead bodies? What is a katakataka it is a herbs? Where to get pennyroyal? Is a true statement regarding obtaining consent to give first aid? Does mercurochrome have mercury in it? What pressure point would you compress to help stop bleeding in the thigh? Can a sonogram be wrong about your due date Last period was Nov 3-5 of 06 and when the sonogram was done it said the due date is Sept 20 means pregnant in December guy with is STERILE?