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WHAT IS THE HUMAN BODY MADE OF?

   About two-thirds of the human body is water. The remaining third is an extremely  complicated mixture of chemicals.The water-and-chemical mix is arranged into structure called CELLs.
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               This is what a cell's inside looks 
              Like. All cells are made up in the same 
               Basic way, though they are different 
                          Shapes and sizes. 
           
These are tiny, but you can see them using a device called microscope.Each part of the body is made of a completely different kind of cells and blood cells all are different. Brain cells are among the very smallest. 
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