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chapter3

bio diff

TermDefinition
food chain series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
food web network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem.
tropic level each step in a food chain or food web.
ecological pyramid illustration of the relative amounts of energy or intercontinental within each tropic level in a given food chain or food web.
biomass total amount of living tissue within a given tropic level.
phytoplankton photosynthetic algae found near the surface of the ocean.
zooplankton small free-floating animals that form part of plankton.
biochemical cycle process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and formed one part of the biosphere to another.
nutrient chemical substance that an organism needs to sustain life.
denitrification process by which bacteria convert nitrates into nitrogen gas.
nitrogen fixation process of converting nitrogen gas into nitrogen compounds that plants can absorb and use.
limiting nutrient single essential nutrient that limits productivity in an ecosystem.
Created by: luisfrivera