Surgical instruments are sterilized by heating them and alcohol is used as disinfectant in cleansing the skin prior to an injection. why are these methods effective against microorganisms ?

Scientists who study the anatomy of the systems in the human body focus their studies on

There is only one copy machine at your office. you have to make 1000 copies of an expense report. after you begin copying, two other employees show up in the copy room. each has to make only 10 copies each. what is the proper etiquette in this situation?

Mechanical sissy washers are required to have