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My question is related to transportation topic under chapter 1 life processes and the question is if human need blood for transportation of oxygen for oxidation in cells where do this blood comes from is it in fixed amount since birth or generated and if generated then how |
| Answer» My question is related to transportation topic under chapter 1 life processes and the question is if human need blood for transportation of oxygen for oxidation in cells where do this blood comes from is it in fixed amount since birth or generated and if generated then how | |