Blood is composed of cells floating in plasma, there are three types of cells red, white and platelet. The plasma is 90% water and encompasses 55% of the fluid identified as blood. Blood cells deliver nutrients like oxygen and transport waste away for the bodies various organs cells.Blood is composed of cells floating in plasma, there are three types of cells red, white and platelet. The plasma is 90% water and encompasses 55% of the fluid identified as blood. Blood cells deliver nutrients like oxygen and transport waste away for the bodies various organs cells.

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