Which is an example of a problem with data collection in the health-care field?
The equipment that is used in data collection is calibrated and working.
The equipment that is used in data collection is not the newest model available.
A survey has relevant questions, but a low number of people respond.
A survey has relevant questions, and a high number of people respond.

answer; the correct answer is desert plants;

i need an image of the diagram

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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.