Which of these diseases does not require the introduction of foreign nucleic acid?
kuru
polio
rabies
st. louis encephalitis

Kuru

Explanation:

Kuru are transmitted by prion. This diseases are untreatable and ultimately fatal.

Prions are infectious proteinaceous particle that are neither virus nor do they contain nucleic acid.

They are transmitted by ingestion of the infected nervous system tissues.They are normally found in the healthy brain tissues if this protein is mis-folded into denatured form it can cause disease.

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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.