Which term describes the relatively constant internal physical conditions of an organsim

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

bc blah

explanation:

bc blah

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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.