ecology
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| Ecology | is the scientific study of interactions among organisms and between organisms and their enviroment
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| Biosphere | contains the combined portions of the planet of which all life exisits
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| species | is a group of organisms so silmilar to one another that they can breed and produce ferile offsprings
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| population | is groups of individuals that belong to the same species and live in the same area
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| community | is a assemblags of different polpulations that live together in a defined area
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| ecosystem | of all the organisms that live in a particular place
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| autotroph | are organisms that use energy from the enviroment to fuel the assembly of simiple inorganic compounds into a complex organic molecules
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| heterotroph | organisms that rely on other organimsms for energy and for food
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| food web | are relationships among the various organisms in an ecosystem to form a network
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| trophic level | is each step in the food chain
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| biomass | total amount of living tissue within a given trophic level
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| biogeochemical cycle | process in which elements chemical compunds and other forms of matter are passed from one organisms to another and form one part of the biosphere to another
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| limiting nutrient | single nutrient that either is scarce or cycles very slowly limiting the growth of organisms in an ecosystem
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| weather | condition of earths atmosphere at a particular time and place
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| climate | average year after year conditions of temperature and precipitations in a particular region
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| green house effect | natural situation in which heat is retained in earths atmosphere by carbnon dioxide, methane, water vapor and other gasses
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| biotic factor | bilogical influences on organisms within an ecosystem
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| abiotic factor | physical, or nonliving, factor that shapes an ecosystem
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| niche | full range of physical and biology conditions in which an organisms lives and the way in which the organisms uses those conditions
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| logistic growth | growth pattern in which a populations growth rate slows or stops following a period of exponetial growth
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| carrying capacity | largest number of individuals of a population that a given enviroment can support
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| demography transition | change in population from high birth and death rates to low birth and death rates
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| demography | scientific study of human populations
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| green revolution | the delopment of highly productive crop strains and the use of modern agricultural techniques to increase yields of food crops
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| renewable resource | resources that can regenerate quickly and that is replaceable
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| pollutant | harmful material that can enter the biosphere through air, land and water
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| biodiversity | bilogical diversirty: the sum total of the variety of organisms in the biosphere
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| biological magnificant | increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web
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Created by:
jackewles
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