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15 Cards in this Set
- Front
- Back
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ecology?
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study of interrelationships of living things and non-living environment
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population?
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all members of a particular species that live w/in an ecosystem & can potentially interbreed
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how does population size change?
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births, deaths, migration
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community?
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all populations that live in a habitat
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ecosystem?
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community of organisms and their environment both biotic and abiotic
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biosphere?
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earth and all places inhabited by organisms
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postitive population growth
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-growth outnumbers deaths
-immigration outnumbers emmigration |
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human population...
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-growing rapidly
-advanced tchnology=increace in carrying capacity 4 humans |
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predation
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predator vs prey
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parasitism
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parasite & host
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symbiosis
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close interaction b/t organisms of a different species.
--> either both benefit or 1 is harmed |
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commensalism
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one species benefits the other is neither harmed or benefits
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mutualism
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both species benefit
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4 trophic levels?
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producers-trees
primary consumers-herbivores secondary consumer-carnivore tertiary-carnivores eating carnivores |
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nutrient cycling
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producer-> 1000
primary-> 100 secondar->10 tertiary->1 |
