He why u gotta have no brains?​

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

Can someone me i need the answer and don’t understand?