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primary consumers feeding on plant materials


a consumer kills and eats another consumer


a co-living relationship, the parasite gains advantage to the cost of the host


mutually beneficial symbiotic relationship (working together for the benefits of both organisms)


one or more individuals depending on the same resource (i.e food, water, shelter)

Intraspecific Competition

competition between members of the same species

Interspecific Competition

competition between different species

The Niche Concept

an organism has a role in a specific environment (i.e. territory/space, interactions, reproduction)

Fundamental Niche

full range at which an organism can live at, potential for the area, DreamLand

Realized Niche

the actual niche fulfillment, specific condition of the area

Gause Experiment

He took protists in a culture and let them reproduce. Alone the protists grew exponentially, but when together the aurelia did better than the other. Concluded that two species can not live in the same niche.

Competitive Exclusion Principle

no two species can occupy the same niche for extended periods of time

Niche Partitioning

dividing up a niche so all species can survive (i.e changing how they look, live/eat different parts of same food, different times of year)


changing space of where organism stays in niche


morphing the look of an organism in a niche


time of the year in which an organism thrives

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