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ecology partone

QuestionAnswer
Ecology scientific study of interactions among organisms and between organisms and their environment
bioshpere part of earth which in life exist including land,water, and air or atmosphere
species group of similar organisms that can breed and produce fertile offspring
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
ecosystem collections of all the organism that live in a particular place, together with their nonliving environment
autotroph organisms that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
heterotroph organisms that obtains energy from the foods it consumes; also called a consumer
food web network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
trophic level step in a food chain or web
biomass total amount of living tissue within a given trophic level
biogeochemical cycle process in which elements, chemical compunds, and other forms of matter are pased from one organism to another from one part of the biosphere to another
limiting nutrient single nutrient that either is scarce or cycles very slowly, limiting hte growth of organisms in an ecosystem
weather condition of earths atmosphere at a particular time and place
climate average, year after year conditions of temperature and percipitation in a particular region
green house effect natural situation in which heat is retained in earths atmosphere by carbon dioxide, methane, water vapor, and other gases
biotic factor biological influence on organisms within an ecosystem
abiotic factor physical or non living factor that shapes an ecosytem
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 populations growth rate slows or stops following a period of exponential growth
Created by: melissacohen
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