A sandbar is a ridge of sand in the water days created through the action of waves and currents a hurricane Hannah coastal area and washed away a series of sandbars near two large barrier islands which argument predict how does event will change species diversity in the region

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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.