Anurse rubs alcohol like ethanol and isopropanol on a patient's skin before administering an injection. what could be a medical consequence of neglecting to clean the skin before puncturing it with the needle?

Infection would be the most likely consequence. There could be other, farther-reaching consequences as well, depending on whether the needle was clean or not, or if the patient's skin was dirty, etc.

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.