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food web
a system of interlocking and interdependent food chains.
ecological pyramid
diagram that shows the relative amounts of energy or matter within each trophic level in a food chain or food web
phytoplankton
photosynthetic algae found near the surface of the ocean
food chain
series of steps in an ecosystem in which organisms transfer energy by eating and being eaten
zooplankton
small free-floating animals that form part of plankton
trophic level
step in a food chain or food web
biomass
the total mass of organisms in a given area or volume.