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Let us look at these components in a more integrated manner and see how the flow of energy takes place within these components of the ecosystem. Interaction of biotic and abiotic components result in a physical structure that is characteristic for each type of ecosystem.
A cell is the smallest structural and functional unit of an organism. Each cell of an organism performs certain functions such as nutrition, transport, excretion and reproduction. To perform these functions, the cell needs energy. Even when we are eating, sleeping or reading we require energy.
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