There are several processes used to explain the removal of dirts or contaminants from surface, but the general name is called Cleaning
Cleaning is an umbrella name that involves the removal of visible soils mater from surfaces, there are other types of cleaning that involves the removal of non-visible matter from surface too e.g sterilisation.
Sterilisation refers to specific action taken to reduce the hazard posed by such contaminants, as opposed to general cleaning.
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You need to eat healthy, exercise daily, take brisk walks and do the daily chores of habitual.
D. Pathogens can be found in saliva and mucus drops from sneezes
Well because you weight is different form every thing else that goes on in your body.
The nurse would mostly likely tell the patient to try it again and give it time.