Biological organization is based on the structural and functional hierarchy of living organisms. Levels of hierarchy range from complex systems to simple components, through a reductionist approach. Hierarchy of life ranges from biosphere to molecules. It consists of biosphere, ecosystems, communities, populations, organisms, organs, tissues, cells, organelles, and molecules.

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Introduction: Biological organization is based on the structural and functional hierarchy of living organisms. Levels of hierarchy range from complex systems to simple components, through a reductionist approach. Hierarchy of life ranges from biosphere to molecules. It consists of biosphere, ecosystems, communities, populations, organisms, organs, tissues, cells, organelles, and molecules.

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