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ecologymeckler
Honors Bio Unit 2
| Question | Answer |
|---|---|
| Ecology | scientific study of interactions amoung organisms and between organisms and their enviroment |
| Bioshpere | part of earth in which life exists including land,water, and air or atmosphere |
| Species | group of similar organisms that can be breed and produce fertile offsping |
| 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 |
| Ecoysystem | collection of all the organisms that live in a particular place, together with their nonliving enviroment |
| Autotroph | organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compunds, also called a producer |
| Heterotroph | organism that obtains energy from the food it comsumes, also called a producer |
| Food Web | network of complex interactions formed by the feeding relationships amoung the warious organisms in an ecoystystem |
| Trophic level | step in a food chain or food web |
| Biomass | total amount of living tissue within a given tropic level |
| Biogeochemical Cycle | process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the bioshpereto another |
| Limiting nutrient | simple nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecoysystem |
| Weather | condition of earth's atmoshpere at a particular time and place |
| Climate | average, year-after-year conditions of temperature and precipitaion in a particular region |
| Green House Effect | natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane,water vapor, and other gases |
| Biotic Factor | bilogical influence on organisms within and ecoysystem |
| Aboitic Factor | physical, or nonliving, factor that shapes and ecosystem |
| Niche | full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions |
| Logistic Growth | growth pattern in which a population's growth rate slows or stops following a period of exponential growth |
| Carrying Capacity | largest number of individuals of a population that a given enviroment can support |
| Demorgrahpy | scientific study of human populations |
| Demographic Transition | change in population from high birth and death rates to low birth and death rates |
| Green Revoulution | the developmetn of highly productive crops strains and the use of modern agriculteral techniques to increase yields of food crops |
| Renewable Resource | resource that can regenerate quickly and that is replaceable |
| Pollutant | harmful material that can enter the bioshpere through the land, air, or water |
| Biodiversity | biological diversity; the sum total of the variety of orgainisms in the biosphere |
| Biological Magnification | increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web |
Created by:
emily55
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