Did I do question 9 correctly? It is related to question 8. Question 8 is related to question d.

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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.

im not intirely sure but i think the anwser is d relative humidity

they kick it to the curb.

explanation:

that current was nasty.