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10 Cards in this Set
- Front
- Back
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the natural situation in which heat is retained by this layer of greenhouse gases
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green house
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colds areas where the sun's rays strike earth at a very low angle
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polar zones
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the biological influences on organism within an ecosystem
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biotic factors
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physical, or nonliving, factors that shape ecosystem
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abiotic factors
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any necessity of life
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resource
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any relationship in which two species live closely together
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symbiosis
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both species benefits from the relationship
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mutualism
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series of predictable changes that occurs in a community over time
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ecological sucession
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on land, succession that occurs on surfaces where no soil exist
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primary succession
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the first species to populate the area
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pioneer species
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