organism - a living thing, population - all the members of one species in a particular area, community - all the different populations that live together in an area, ecosystem - all the living and nonliving things that interact in an area, biosphere - the parts of the Earth and surrounding atmosphere where there is life, biome - is a large group of ecosystems that share the same climate and have similar types of communities., Ecology - is the scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are studied., Ecologists - are scientists who observe, experiment, and model using a variety of tools and methods., Mutualism - both organisms benefit, Commensalism - one organism benefits, the other is neither helped nor harmed, Parasitism - one organism benefits at the expense of the other (host)., Predation - is the act of one organism pursuing and consuming another organism for food., Competition - Occurs when more than one organism uses a resource at the same time, habitat - is an area where an organism lives out its life., niche - is the role or position that an organism has in its environment.,

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