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Unit 6 part 1

Flow of Energy

TermDefinition
Ecosystem A system comprising all the biotic and abiotic factors in an area and all the interactions among them.
Energy Pyramid A diagram that shows the trophic levels of organisms in a food web.
Producers Organisms that make complex, energy-containing biomolecules from simple inorganic molecules using energy captured from light or inorganic chemical compounds.
Consumers An organism that must consume other organisms for nutrients.
Tertiary Consumers Animals that eat secondary consumers.
Herbivores Organisms that consume only plants.
Carnivores Animals that eat other animals.
Decomposers Organisms such as bacteria and fungi that break down the remains of dead plants and animals without need for internal digestion.
Food Chain A single, linear path showing the flow of energy from the sun to producer and through different levels of consumers.
Food Web Overlapping food chains with different pathways for the flow of food energy in an ecosystem.
Grazing Food Web Starts with radiant energy captured by producers through photosynthesis, and continues with energy flow from producers to consumers and finally to decomposers.
Detrital Food Web Starts with chemical energy stored in organic debris or waste from other food webs; continues flowing energy directly to decomposers. They become food and energy for consumers, and again, decomposers.
Primary Consumers An organism that gets their energy by feeding on producers in the food chain.
Secondary Consumers Animals that eat other animals that eat plants.
Trophic Level The position an organism occupies on the food web.
Created by: Davis001