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Ecology Holt

flash cards for ecology

QuestionAnswer
Ecology scientific study of interactions among organisms and between organisms and their environment.
Biosphere Part of earth in which life exists 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 Collection of all the organisms that live in a particular place, together with their nonliving environment.
Autotroph Organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer.
Heterotroph Organism 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 food web.
Biomass Total amount of living tissue within a given trophic level.
Biogeochemical Cycle Process in which 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 Single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem.
Weather Condition of Earth's atmosphere at a particular time and place.
Climate Average, year after year conditions of temperature and precipitation in a particular region.
Created by: taryn.holt
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