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Ecosystems

TermDefinition
Organism Living thing
Habitat An environment that provides the things a specific organism needs to live, grow, and reproduce.
Boitic factor The parts of a habitat that are or were once alive and that interact with an organism
Abiotic factor The non living parts of an organisms habitat
Species A group of organisms that can mate with each other and produce offspring
Population All the members of one species living in a particular area
Community All the different populations that live together in an area
Ecosystem The community of organisms that lives in a particular area, along with the non living environment
Ecology The study of how organisms interact with each other and with their environment
Population density The number of individuals in an area of a specific size
Limiting factor An environmental factor that causes a population to stop growing or to decrease in size, such as a fatal disease infecting organisms, organisms, is a limiting factor
Carrying capacity The largest population that an area can support
Niche How an organism obtains its food
Competition The struggle between organisms to survive as they use limited resources
Predation An interaction in which one organism kills another food or nutrients
Symbiosis Any realshionship in which two species live close together
Commensalism A realstionship in which one species benefits and other species is neather helped nor harm
Mutualism A relationship in which both species benefits
Parasitism A relationship that involves one organism living with
Producer Organism that makes his own food
Consumer Obtained energy by feeding on other organisms
Decomposer Breakdown biotic waste and dead organisms
Food chain A series of events in which one organism eats others
Food web Consist of many overlapping food chains in an ecosystem
Energy pyramid The amount of energy that moves from one feeding level to another
Photosynthesis The set of chemical reactions plants used to turn light
Chlorophyll Absorbs light
Autotroph An organism that makes its own food
Heterotrophs Is unable to make its own food
Created by: user-1979068
 

 



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