A community of organisms (such as plants, animals and bacteria), and non-living things (such as soil, climate and atmosphere), in a given area that interact with each other. All the components of an ecosystem impact each other directly or indirectly and are linked together through nutrient cycles and energy flows. Ecosystems can be of any size, but are usually specific to a place. They can be as small as the area underneath a rock, or as big as the Atlantic Ocean.

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