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the scientific discipline in which the relationships among living organisms and the interactions the organisms have with their environments are studied
individual organisms of a single species that share the same geographic location at the same time
a group of interacting populations that occupy the same geographic area at the same time
a relationship between two or more organisms that live closely together and benefit from each other
an organism which eat fragments of dead matter in an ecosystem and returns nutrients to the environment
a model representing the many interconnected food chains and pathyways in which energy flows through a group of organisms
the process of capturing and converting nitrogen into a form that is usable by plants
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