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Chapter 18.3

Chapter 18.3 vocab

producer autotrophs that capture energy and use it to make organic molecules
chemosynthesis they use energy stored in inorganic molecules to produce carbohydrates
gross primary productivity the rate at which producers in an ecosystem capture the energy of sunlight by producing organic compounds
biomass the organics material that has been produced in an ecosystem
net primary productivity the rate at which biomass accumulates
consumer heterotrophs that obtain energy by consuming organism molecules made by other organisms
herbivore eat producers/plants
carnivore eat other consumers/meat
omnivore eat both producers and consumers/plants and animals
detritivore are consumers that feed on the "garbage" of an ecosystem (organisms that have recently died, fallen leaves, animal wastes)
decomposer they cause decay by breaking down complex molecules into simpler molecules (fungi and bacteria)
trophic level indicates the organism's position in a sequence of energy transfers
food chain a single pathway of feeding relationships among organisms in an ecosystem that results in energy transfer
food web the interrelated food chains in an ecosystem
Created by: CoffeyM20



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