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The Enviorment

Lessons 1-3

QuestionAnswer
Organism A living thing.
habitat An enviornment that provides the things a specific organism needs to live and grow.
biotic factor A living or once living part of an organism's habitat.
abiotic factor A nonliving part of an organism's habitat.
species A group of similar organisms that can mate with each other and produce.
population All the members of one species living in the same area.
community All the different populations that live together in a particular area.
ecosystem The community of organisms that live in a particular area , a long with their nonliving enviornment.
ecology The study of how organisms interact with each other and their enviornment.
birth rate The number of births per 1000 individuals for a certain time period.
death rate The number per 1000 individuals for a certain time period.
immigration Movement of individuals into a population's area.
emigration Movement of individuals out of a population's area.
population density The number of individuals in an area of a specific size.
limiting factor A enviornmental factor that causes a population to decrease in size.
carrying capacity The largest population that a particular enviornment can support.
natural selection The process by which an organism that are best adaptive to their enviornment are most likely to survive and produce.
adaptation An inherited behavior of physical characteristics that help and organism survive and reproduce in its environment.
niche How an organism makes its living and interacts with the biotic and abiotic factors in it's habitat.
competition The struggle between organisms to survive.
predation An interaction in which one organism kills another for food or nutrients.
predator The organism that does killing in a interaction.
prey An organism that in killed and eaten by another.
symiosis Any relationship in which two species live closely together and that benefits at least one of the species.
mutualism A type of symiosis in which both species benefit from living together .
commensalism A type of symbiosis between two species in which one species benefits and the other species in neither helped nor harmed.
parasitsm A type of symbiosis in which one organism lives with, on, or in a relationship host and harms it.
parasite The organism that benefits by living with, on, or in a host and harms it.
host An organism that a parasite lives with in, or, on, and provides a source of energy or a suitable enviornment for the parasite to live.
Created by: user-1975075
 

 



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