Which disorder is characterized by the following: a pattern of recurring thoughts or behavior, such as repeatedly checking if the doors are locked, that prevents people fromgoing about their day normally

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

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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.