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ecologyhanson

Biology

QuestionAnswer
What is ecology? It is the scientific study of interactions among organisms and between organisms and their environment
What is a biosphere? It is the part of Earth in which life exists including land, water, and air or atmosphere
What is a species? It is a group of similar organisms that can breed and produce fertile offspring.
What is a population? It is a group of individuals of the same species that live in the same area.
What is a community? It is an assemblage of different populations that live together in a defined area.
What is an ecosystem? It is a collection of all the organisms that live in a particular place, together with their nonliving environment.
What is an autotroph? It is an organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compunds; also called a producer.
What is a heterotroph? Its is an organism that obtains energy from the food it consumes; also called a consumer.
What is a food web? It is a network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem.
What is a trophic level? It is a step in the food chain or food web.
What is biomass? It is the total amount of living tissue within a given trophic level.
What is the biogeochemical cycle? It is the process in which elements, chemical compunds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another.
What is a limiting nutrient? It is the single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem.
What is weather? It is the condition of Earth's atmosphere at a particular time and place.
What is climate? It is the average, year-after-year conditions of temperature and precipitation in a particular region.
What is the green house effect? It is the natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases.
What is biotic factor? It is the biological influence on organisms within an ecosystem.
What is Abiotic factor? It is the physical, or nonliving, factor that shapes an ecosystem.
What is a niche? It is a full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.
What is logistic growth? It is the growth pattern in which a population's growth rate slows or stops following a period of exponential growth.
What is carrying capacity? It is the largest number of individuals of a population that a given environment can support.
What is demography? It is the scientific study of human populations.
What is demographic transition? It is the change in polulation from high birth and death rates to low birth and death rates.
What is green revolution? It is the development of highly reproductive crop strains and the use of modern agricultural techniques to increase yields of food crops.
What is renewable resource? It is a resource that can regenerate quickly and that is replacable.
What is a pollutant? It is a harmful material that can enter the biosphere through the land, air, or water.
What is biodiversity? It is biological diversity; the sum total of the variety of organisms in the biosphere.
What is biological magnification? It is the increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web.
Created by: justinhanson
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