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Unit 12 Vocabulary

TermDefinition
Terrestrial land
Aquatic water
Freshwater Ecosystems aquatic ecosystems with less than 1% salt content
Marine Ecosystems aquatic ecosystems with at least 3.5% salt content
Food Chain The path of food energy from the Sun, to the producer, then transferred to a series of consumers.
Food Web Overlapping food chains with different pathways for the flow of food energy in an ecosystem.
Producer An organism that is capable of performing photosynthesis, transforming energy from the Sun, and using carbon dioxide and water to make food.
Consumer An organism that must consume other organisms for nutrients.
Herbivore An organism that consumes only plants.
Carnivore An organism that consumes other animals.
Omnivore An organism that consumes both animals and plants.
Parasite An organism that survives on a host organism and causes harm to the host.
Host An organism that is used by another organism for nutrients, shelter, or transport; it is harmed by the relationship.
Predator An organism that hunts for its food.
Prey An organism that is hunted by other organisms for food.
Decomposer Organisms such as bacteria and fungi that break down the remains of dead plants and animals, without need for internal digestion.
Detritivore Organisms that do not kill their own food, but eat dead or decaying plants or animals.
-troph an organism that gets nourishment from a (specified) source
Trophic Level The position an organism occupies on the food web.
Autotroph An organism that produces its own food, such as a plant.
Heterotroph An organism that must use other organisms for food, such as animals.
Energy Pyramid A diagram that shows the trophic levels of organisms in a food web.
Created by: tamiwaller
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