What does the body use to build maintain and repair cells?

Proteins is used to build and repair cells.

Protein can be found in every living cell and it is very important building block in the body. Protein supply amino acids which were being used to create and repair cells, enzymes, red blood cells, antibodies and tissues. In the body, protein functions by maintaining fluid balance and transportation substances. Protein can be gotten from meat, dairy products, soyabeans, nuts, beans and certain grains.    However, protein from meat and other animal products are known as complete protein.  

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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.

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.