Which of these is a weakened or dead form of a pathogen that causes an immune response?

Vaccination is a way to trigger the immune response. Small doses of antigen such as a dead or weakened live virus are given to activate immune system “memory”. Memory allows your body to react quickly and effectively to future exposures.

Vaccine

Explanation: there's no point, I won't be the type of person who says "A vAcCiNe Is a ShOt no I won't waste your time by being that person

looks like youre on your own with this one buddy

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.