Answer: It intentionally tries to promote happiness
"Vaccination works to stimulate a specific immune response that will create memory B and T cells specific to a certain pathogen. These memory cells persist in the body and can lead to a quick and effective response should the body encounter the pathogen again."
its the same idea...
F js f i f g i f i f i f i ao c si
Is this a true or false? Because yes those are both effected by water pollution.
