Tolerance, The range of conditions a species can survive in, Niche, A species' "job" or role in its environment, Resources, Things organisms need to survive (food, water, space), Competition, When organisms try to use the same limited resources, Intraspecific Competition, Between members of the same species, Interspecific Competition, Between different species, Competitive Exclusion Principle, No two species can occupy the exact same niche, Predation, When one animal eats another, Herbivory, When an animal eats plants, Keystone Species, A species that has a big impact on its ecosystem, Symbiosis, Close relationship between two species, Mutualism, Both species benefit, Parasitism, One benefits, one is harmed, Commensalism, One benefits, the other is unaffected, Biomes, Large regions with similar climate and ecosystems, Shifting Mosaic, Different parts of an ecosystem recover at different times, Direct Impacts, Deforestation, agriculture, pollution, Indirect Impacts, Climate change affecting ecosystems globally, Ecology, The study of living things and their environments, Energy pyramid, Way of showing how energy moves through a food chain.

Ecology

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