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ecology kellems
| Question | Answer |
|---|---|
| Ecology | scientific study of the interactions among organisms and between organisms and their environmnet |
| Biosphere | part of earth in which life exists including land, water, and air or atmosphere |
| Species | group of similar organisms that can breed and produce fertile offspring |
| Population | group of individuals of the same species that live in the same area |
| Community | assemblage of different populations that live together in a defined area |
| Ecosystem | collection of all the organisms that live in a particular place, together with their nonliving environment |
| Autotroph | organism that can capture energy from the sunlight or chemicals and use it to produce its own foodfrom inorganic compounds; also called a producer |
| Heterotroph | organism that obtains energy from the foods it comsumes; also called a consumer |
| Food Web | network of complex interactiveformed by the feeding relationship amoung the various organisms in an ecosystem |
| Trophic Level | step in a food chain or food web |
| Biomass | total amount of living tissue with a given trophic level |
| Biogeochemical Cycle | process in which elements, chemical compunds, and other forms of matter are passed from one organism to another and from one part of the bioshpere to another |
| Limiting Nutrient | single nutrient that either is scarce or cycles very slowly; limitly the growth of orgnaisms in an ecosystem |
| Weather | condition of earth's atmosphere at a particular time and place |
| Climate | average, year-after-year conditions of temperature and preciptation in a particular region |
| Green House Effect | natural situation in which heat is retained in earth's atmosphere by carbon dioxiode, methane, water vapor and other gases |
| Biotic Factor | biolofical influence on organisms within an ecosystem |
| Abiotic Factor | physical, or non-living, fator that shapes an ecosystem |
| Niche | full range of physcial and biological conditions in which an organism lives and the way in which the organism uses those conditions |
| Logistical Growth | growth pattern in which a population's growth slows or stops following a period of exponential growth |
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ckbllrina
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