abiotic factors, non-living or never living environmental factors (air, water, parts of the soil)., biotic factors, living or once living environmental factors (plants, animals, decaying organisms, parts of the soil)., habitat, the place within an ecosystem that provides the all the biotic & abiotic factors that an organism needs., niche, the way a species interacts with the biotic and abiotic factors to obtain food, find shelter, and fulfil other needs. It is an organism's role in the environment., population, all of the organisms of the same species that live in the same area at the same time., community, all of the populations that live in an ecosystem at the same time., ecosystem, a community of organisms and their abiotic (non living) environment., predation, the act of one organism, the predator, feeding on another organism, the prey., symbiosis, a close, long-term relationship between 2 species that usually involves an exchange of food or energy., mutualism, a symbiotic relationship in which both organisms benefit., commensalism, a symbiotic relationship in which one organism benefits and the other is neither harmed nor benefited., parasitism, a symbiotic relationship in which one organism benefits and the other is harmed., host, the organism that is harmed by a parasite., competition, the interaction between two or more organisms that need the same resource at the same time., cooperation, behavior by two or more individuals that leads to mutual benefit, population density, the size of a population compared the amount of space avail., carrying capacity, the largest number of individuals that an ecosystem can support over time., limiting factor(s), environmental factors that restrict population growth, extinction, when all members of a population or entire species die out., energy pyramid, A diagram that shows the amount of energy that moves from one feeding level to another in a food web, trophic level, The position an organism occupies in a food chain or energy pyramid. It describes how the organism gets its food (producer, primary consumer, secondary consumer, etc.).

Ecological Relationships & Interactions

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