estuaries, It is an area where the river meets the sea. What is it?, intertidal zone, It is the area where the sea meets the land between high and low tides. What is it?, ecosystem, These are the living components in the ecosystem. What is it?, biotic, These are non-living factors in the environment. What is it?, abiotic, The relations hip between biotic and abiotic factors in a certain place. What is it?

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