Adrug company performed a study to test the effectiveness of a new headache medicine. the researchers grouped the patients into two different groups. one group was given the pills that contained the new medicine. the other group were given pills that did not contain the new medicine. why did the researchers not tell the patients which pill they were given?

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

Why do lunar and solar eclipse not happen every month