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   ocr: THE LIVING EARTH T HE PART atmosphere ofthe that Earth can and support its a same community. habitat. The Together, members they all ofa form living organisms is called the biosphere. community constantly react with This consists of the air and land,as well one another and their environment, as. lakes, rivers, and oceans. Organisms creating a balanced, living system usually live alongside other members of called an ecosystem, such as an ocean the same species to form a population. ora rain forest. The study ofall these Lots ofdifferent populations share the interactions is called ecology. Eart ...