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ecology terms
Term | Definition |
---|---|
ecology | study of all the interactions among organisms and their enviornment |
abiotic factor | any nonliving part of the enviornment , such as water, sunlight, temperature and air |
biotic factor | any living or once living part of the enviornment |
population | all of the individuals of one species that live in the same space at the same time |
community | all of the populations of different species in a given area that interact in some way and depend on one another for food and water |
ecosystem | all of the communities in a giving area and the abiotic factors that effect them |
biosphere | part of earth that supports life- the top part of earths crust, all the waters covering the earths surface and the surrounding atmosphere |
population density | # of individuals in a population |
limiting factor | any biotic or abiotic factor that limits the number of individuals in a population |
symbiosis | any close interactions among two or more species |
niche | role of an organism in the ecosystem |
habitat | place where an organism lives |
food chain | model that describes how energy passes from one organism to another |
food web | model that describes how enregy from food moves though a community |
water cycle | continuous cycle of water molecules on the earth throughout the process of evaporation,condensation, and precipitation |