the study of the interactions between living and nonliving things
ecology
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a group of interbreeding organisms coexisting together
population
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a group of populations living and interacting in the same area
community
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an association of living organisms and their physical environment
ecosystem
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a group of ecosystems classified by climate and plant life
biome
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the sum of all Earth's ecosystems in land, water, or air
biosphere
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one or more populations of individuals that can reproduce under normal conditions, produce fertile offspring, and are rerproductively isolated from other such populations
species
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any living part of an environment
biotic factors
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the nonliving physical and chemical conditions affecting organisms
abiotic factors
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organisms that produce their own food
producers
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organisms that eat living producers and/or other consumers for food
consumers
10
organisms that break down the dead remains of other organisms