3.2-3.4 notes
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Autotroph | Organism that is able to capture energy from sunlight or chemicals and use it to produce it's own food from inorganic compounds; also called a producer
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| Primary Producer | First producer of energy-rich compounds that are later used by other organisms.
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| Photosynthesis | Process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches.
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| Chemosynthesis | Process in which chemical energy is used to produce carbohydrates.
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| Heterotroph | Organism that obtains food by consuming other living things; also called a consumer.
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| Consumer | Organism that relies on other organisms for it's energy and food supply; also called a heterotroph
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| Carnivore | Organism that obtains energy by eating animals.
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| Herbivore | Organism that obtains energy by eating only plants.
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| Scavenger | Animal that consumes the carcasses of other animals.
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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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| Detritivore | Organism that feeds on plants and animal remains and other dead matter.
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| Food Chain | Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
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| Phytoplankton | Photosynthetic algae found near the surface of the ocean.
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| Food web | Network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem.
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| Zooplankton | Small free-floating animals that form part of plankton.
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| Tropical Level | Each step in a food chain or food web.
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| Ecological Pyramid | Illustration of the relative amounts of energy or matter contained within each trophic level in a given 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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| Nutrient | Chemical substance that an organism needs to sustain life
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| Nitrogen Fixation | Process of converting nitrogen gas into nitrogen compounds that plants can absorb and use.
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| Denitrification | Process in which bacteria converts nitrates into nitrogen gas.
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| Limiting Nutrient | Single essential nutrient that limits productivity in an ecosystem.
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Created by:
Kent Clark
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