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Ecology chapter 1 S

TermDefinition
Organisism A living thing
habitat An enviorment that provides thing that a specific organisms needs to live,grow, and reproduce.
Biotic factor A living or once living part of an organisms habitat.
Abiotic factor A non living part of an organisms habitat.
species A group of organisms that can mate with each other.
population All the members of one species living in the same area.
comunity All the different populations that live together in a particular area.
ecosystem The community of organisms that live in a particular area.
ecology The study of how organisms interact
Birth rate Number of births per 1,000 individuals for a certain time period.
Death rate Number of deaths per 1,000 individuals for a certain time period.
imigration Movement of individuals into a population's area.
emigration Movement of individuals out of a population's area.
Population density Number of individuals in an area of specific size.
limiting factor An enviromental factor that causes a population to decrease in size.
carrying capasity The largesest population that a particular enviorment can support.
Natural Selection The process by which organisms that are best adapted to their enviorment .
Adaptation An inherited behavior or physical characteristic that helps an organism survive.
Niche How an organism makes its living and interacts with biotic and abiotic factors.
Competition the struggle between organisms to survive together in a particular area.
predetation An interaction in which organism kills another for food.
preditor The organism that does the killing
Prey An organism that is killed and eaten by another organism in a predation interaction.
Symbiosis Any relationship in which two species live closely together.
MUTUALISM A type of symbiosis in which both species benefit from living together.
Commensalism A type of symbiosis between two species benefit.
Parasitism A type of symbiosis in which one organism lives with.
Parasite The organism that benefits by living with.
Host An organism that a parasite lives with.
Succsession The series of predictable changes that occur in a community overtime.
Primary succession The series of changes that occur in an area.
Pioneer species The first speices to populate an area during succession.
Secondary succession The series of changes that occur in an area where the ecosystem has been disturbed.
Created by: hjl201020855
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