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ecology wood
| Question | Answer |
|---|---|
| ecology | the specific study ofinteractioonsamoung organisms and between organisms and their enviornment, surroundings |
| biosphere | contains the combined portions of the planet in which all life exsists |
| species | a group of organisms so similar to one another that they can breed and produce fertile offspring |
| population | groups of living individuals that belong to the same species and live in the same area |
| community | assemblages of different populations that live togeather in a defined area |
| ecosystem | a collection of all the organisms that live in a particular place, togeather with their nonliving, or physical, enviornmennt. |
| autotrouph | use energy from the enviornment to fuel the assembly of simple inorganic compound into complex organic molecules |
| heterotroph | organisms that rely on other organisms for their energy and food supply |
| food web | links all the food webs in an ecosystem together |
| trophic level | each step in a food chain or food web |
| biomass | the total amount of living tissue within a given trophic level |
| biogeochemical cycle | elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another |
| limiting nutrient | when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly |
| weather | day-to-day condition of earths atmosphere at a particular time and place |
| climate | the average year-after-year conditions of temperature and perception in a particular region |
| green house affect | the natural situation in which heat is retained by this layer of greenhouse gasses |
| biotic factor | the biological influences on organisms within an organism |
| abiotic factor | physical or nonliving factors that shape ecosystems |
| niche | the full range of physical and biological conditions in which an organism lives in and the way in which an organism lives and the way in which the organism uses those conditions |
| logistic growth | when a population's growth stops or slows following a period of exponential growth |
| carrying capacity | the largest # of individuals that a given environment can support |
| demography | the scientific study of human populations |
| demographic transition | a dramatic change in birth or death rates |
| green revolution | modern food production that greatly increased the worlds food supply |
| renewable resource | regenerate if living or replenished by biochemical cycles if not living |
| pollutant | a harmful material that can enter the biosphere through land air or water |
| biodiversity | the sum total of of the genetically based variety of all organisms in the biosphere |
| biological magnification | concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or web |
Created by:
treywood
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