The Human Body There are hundreds/millions of cells in the human body. The maiority/minority of these cells are as small as a grain of salt. Tissues are a group of cells that play a particular role, like covering the mouth. Different types of tissues combine their traits/ characteristics to form an organ with specific functions. Organs do not work in isolation, they form a part of a community system that performs a vital function. The body transforms food into energy. We must supply food, oxygen and water to our cells, and also a way to get rid of the waste. The body systems/organisation take care of these needs. m
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