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Ecology Strom
unit 2 vocab
| Question | Answer |
|---|---|
| Ecology | the scientific study of interactions amoung organisms and between organisms and their enviroment/surroundings. |
| biosphere | contains the combined portions of the planet in which all life exists including land water air or atmosphere. |
| species | a group of organisms so similar to one another that they can breed and produce fertile offspring. |
| population | groups pf individuals that belong to the same species and luve in the same area |
| community | assembles or different populations that live together in a defined area |
| ecosystem | a collection of all organisms that live in a particular place together with their nonliving or physical enviroment |
| autotrophs | plants that use sunlight to capture food |
| herterotrophs | organisms that rely on other organisms for their energy and food suply |
| food web | links all food chains in an ecosystem together |
| trophic level | ec=ach step in food chain or web |
| biomas | the total amount of living tissue within a given trophic level |
| bigeochgemical cycle | elements chemical compounds and other forms or matter passed from one organisms to another from one part of a biosphere to another |
| limiting nutrients | a single nutrieny that is scarce or cycles are very slowly |
| weather | the day to day condition of earths atmosphere at a particular time and place |
| climate | the average year to year conditions of temperature and precipitation on a particular region. |
| greenhouse effect | the natural situation in which heat is retained by this layer of greenhouse effect |
| biotic factor | the bioligical influence on organisms within an ecosystem |
| abiotic factor | physical or nonliving factors that shape ecosystems |
| niche | the full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions |
| logistic growth | occurs when a populations growth slows or stops following a period or exponential growth |
| carrying capacity | the # that represents the largest # of individualsthat a given enviroment can support |
| demography | the scientific study of human popultoins |
| demographic transition | a dramatic change in birth and death rates |
| green revolution | when modern agricultural techniques were introduced |
| renewable rescource | can regenerate if they are alive or can be replenished by biochemical cycles if they are nmonliving |
| pollutant | a harmful material that can enter the bioshpere through the land water or air |
| biodiversity | the sum total of the genetically based variety of all organisms on the biosphere |
| biological magnification | concentrations of a harmful substance increase in organisms at a higher trophic levels in a food chain or food web. |
Created by:
jamal finklesmith
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