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Biosphere
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ECOLOGY fogarty
ecology terms
| Question | Answer |
|---|---|
| Ecology | is the scientific study of interactions among organisms and between organisms and their enviroment, or surroundings |
| Biosphere | contains the combined portions of the planet in which all of life exists, including land, water, and air, or atmosphere |
| species | is a group of organisms so similar to one and another that they can breed and produce fertile offspring |
| population | groups of individuals that belong to the same species and live in the same area |
| community | assembleges of diffrent populations that live toghter in a defined area |
| ecosytstem | is a collection of all the organisms that live in a particular place, toghter with their nonliving, or phyisical enviroment |
| autotroph | capture energy from sunlight or chemicals and use that energy to produce food |
| heterothrophs | organuisms that rely on other organisms for their foood and energy supply |
| food web | when the feeeding realtionships among the various organisms in an ecosystem from a network of complex interactions |
| trophic levels | each step in a food chain of food web |
| biomass | the amount of living tissue withen a given trophic level |
| biogeochemical cycle | elements, chemical compounds, and other froms 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 |
| weathter | is the day to day condition of earths atomosphere at a apticular time and place |
| climate | refers to the average year after year conditionds of tempature and precipitation in a region |
| green house effect | the natural situatiuon in which heat is retained by this layer of greenhouse gases |
| biotic factor | the biological influnces on organisms within an ecosystem |
| abiotic factor | physical or nonliving factors that shape ecosystems |
| niche | is the full range of physical and biological conditions in which an organism lives and the way in which the organism uses thoose conditions |
| logistic growth | when a populations growth slows or stops following a period of exponential growth |
| carrying capacity | the largest number of individuals that the enviroment can support |
| demography | the scientific study of human population |
| demograhic transition | a dramitic changes in birth and death rates |
| green revoultion | the use of chemicalfertilizers to greatly increase the worlds food supply |
| renewable resource | can regenrate if they are alive or can be replinished by biochemical cycles if they are nonliving |
| pollutant | is a harmful material that can enter the biosphere throught the land, air, or water |
| biodiversity | the sum total of the genetically based variety of all organisms in the biosphere |
| biological maginifaction | concertrations of a hramful stubstance increases in organisms at higher trophic levels in a food chain of food web |
Created by:
taylorfogarty
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