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Ecosystem

TermDefinition
Biotic Factors a living thing, as an animal or plant, that influences or affects an ecosystem
Abiotic Factors a nonliving condition or thing, such as climate or habitat, that influences or affects an ecosystem and the organisms in it
producers an organism, as a plant, that is able to produce its own food from inorganic substances
consumers an organism, usually an animal, that feeds on plants or other animals
decomposers an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances.
herbivore animals that get their energy by only eating producers or plants
carnivore animals that get their energy by only eating other consumers.
omnivore animals that get their energy by eating both producers (plants) and consumers (animals).
predator any organism that exists by preying on other organisms.
prey an animal hunted or seized for food, especially by a carnivorous animal.
terrestrial ecosystem a land-based community of organisms
aquatic ecosystem an ecosystem in a body of water
food chains the path of food energy from one organism to another in an ecosystem.
food webs overlapping food chains with different pathways for the flow of food energy in an ecosystem.
energy pyramid a diagram that shows the amount of energy passed on at each level of the food chain.
competition the struggle of organisms against each other to get the same resource.
natural resources materials in the environment that are useful to people.
population all the organisms of the same species that live in the same place at the same time.
community populations of different kinds of an organism that live in the same place at the same time.
habitat the environment where an organism lives.
estuary a place where fresh water from a river empties into the ocean and mixes with it.
brackish slightly salty, as is the mixture of river water and salt water in estuaries.
Created by: 6347718685
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