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18-3 terms
Question | Answer |
---|---|
producers | organisms that capture energy and use it to make organic molecules |
chemosynthesis | a process in which bacteria 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 organic material that has been produced in an ecosystem |
net primary productivity | the rate at which biomass accumulates |
consumers | organisms that obtain energy by consuming organic molecules produced by other organisms |
herbivores | eat producers |
carnivores | eat consumers |
omnivores | eat both producers and consumers |
detritivores | consumers that feed on the garbage of an ecosystem |
decomposers | detritivores that cause decay by breaking down complex molecules into simpler molecules |
trophic level | 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 |