Unit 3 Ecology Study Stack
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each of the black spaces below before clicking
on it to display the answer.
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| Ecology | Scientific study of interactions among organisms and between organisms and their enviroment
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| Biosphere | Part of Earth in which life exists including land, water and air or atmosphere.
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| Species | A group of similar organisms that can breed and produce fertile offspring.
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| Population | Group of individuals of the same species that live in the same area.
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| Community | Assemblage of different populations that live together in a defined area.
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| Ecosystem | Collection of all the organisms that live in a particular place, together with their nonliving environment.
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| Biome | A group of ecosystems that have the same climate and dominant communities.
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| Autotroph | Organism that can capture energy from sunlight or chemicals and use it to produce its own food fro inorganic compounds; also called a producer.
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| Chemosynthesis | Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates.
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| Consumer | Organism that relies on other organisms for its energy and food supply also called a hetrotroph
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| Carnivore | Organism that obtains energy by eating animals
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| Detritivore | Organism that feeds on plant and animals remains and other dead matter.
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| Food Chain * Food web | Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
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| Trophic Level | Step in a food chain or food web
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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 compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another.
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| Evaperation | Process by which water changes from a liquid into an atmospheric gas
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| Transpiration | Loss of water from a plant through its leaves.
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| Nutrient | Chemical substance that an organism requires to live.
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| Nitrogen Fixation | Process of converting nitrogen gas into ammonia
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| Denitrification | Conversion of nitrates into nitrogen gas.
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| Primary Productivity | Rate at which organic matter is created by producers in an ecosystem.
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| Limiting Nutrient | Single nutrient that either is scarce or cycles very slowly, limiting the growth or organisms in an ecosystem.
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| Algal Bloom | An immediate increase in the amount of algae and other producers that results from a large input of a limiting nutrient.
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| Producer | Organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph
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| Heterotroph | Organism that obtains energy from the foods it consumes; also called a consumer.
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| Herbivore | Organism that obtains energy by eating only plants.
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| Omnivore | Organism that obtains energy by eating both plants and animals
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| Decomposer | Organism that breaks down and obtains energy from dead organic matter
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| Ecology Pyrimid | Diagram that shows the relative amounts of energy or matter within each trophic level in food chain or food web.
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