Why is water so abundant in our body ?

One big reason we have water in our bodies is that it helps gives cells their structure, she said. It keeps cells a little plump. It also helps make different chemical reactions cells need to do their jobs. Water is also in charge of moving things around the cell to keep it working.

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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.