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ecology
for ecology test
Term | Definition |
---|---|
ecology | study of how animals work together with the animals and the environment |
abiotic factor | any nonliving part of the environment |
biotic factor | any living or once living organism |
population | all individual species that live in the same area |
community | all of the population of the species in a given area that interacts in some way |
ecosystem | all the communities in a given area of biotic and abiotic factors |
biosphere | top part of the earths crust that supports life on earth |
population density | # of individuals in a population occupies an area of limited size |
limiting factor | any factor that limits the organisms that can live in a given area |
symbiosis | interactions between two or more species including mutualism,commenalism,parasitism |
niche | role of an organism in the ecosystem |
habitat | place where an organism lives (the organisms job) |
food chain | model that describes how energy passes form one organism to the next |
water cycle | the cycle in which water goes in with precipitation |
food web | model that describes how energy from food moves through a community a series of over lapping food chains |