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23 Cards in this Set
- Front
- Back
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biosphere |
the part of earth that contains all ecosystems |
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ecosystem |
community and its NON LIVING SURROUNDINGS |
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Community |
populations that lived together in a defined area |
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population |
group of organisms of one type that live in the same area |
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organism |
individual living thing |
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when does exponential growth occur |
when populations reproduce at a constant rate |
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exponential growth must have ....... resources |
unlimited |
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when does logistic growth occur |
when population growth slows or stops due to LIMITED RESOURCES |
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what is carrying capacity |
shows the largest number of individuals that an ecosystem can support |
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what growth does carrying capacity involve |
the logistic growth |
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what is carrying capacity caused by |
competition for food, space, disease, and predation |
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density dependent |
limiting factors that depend on population size (competition, predation, parasitism, and disease) |
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density independent |
limiting factors that affect all populations regardless of size (unusual weather, natural disasters, seasonal cycles, human activities) |
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niche |
its place in the food web (job in food web) |
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primary sucession |
no soil exsits |
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secondary sucession |
lands are being cleared but soil still exists |
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biotic factors |
living things (producers, consumers, decomposers) |
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abiotic facotrs |
non living things (water, temperature, light, soil) |
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what is another word for producer |
autotroph |
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what is another word for consumer |
heterotroph |
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who make up the first trophic level |
producers |
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who are the first level consumers |
herbivores |
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who are the second level consumers |
carnivores and omivores |
