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seicnece lesson 1-3

TermDefinition
organism A living thing
habitat an environment that provides the things a speific organisms needs to grow , live, and reproduce
biotic factor a living or once a living part of a organisms habitat
abiotic factor A nonliving part of a organisms habitat
species A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce
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 along with their nonliving environment
ecology The study of how organisms interact with each other and their envrionment
birth rate The number of births per 1,000 people for a certain time period
death rate the number of deaths per 1,000 people for a certain time period
immigration movement of individuals into a populations area
emigration Movement of individuals out of a populations area
population density The number of individuals in a area of a specific size
limiting factor an envirnmental factor that causes a population to decrease in size
carrying capacity the largest population that a particular environment can support
natural selection the process by which organisms that are best adapted to their environment are most likely to survive and reproduce
adaption an inherited behavior or physical characteristic that helps and organism survive and reproduce in a environment
niche how an organism makes its living and interacts with the habitat
competition the struggle between animals to survive as they attempt to use the same limited resources in the same place at the same time
predation an interaction in which one organism kills another for food or nutrients
predator the organism that does the killing in a predator interaction
prey an organism that is killed and eaten by another organism in a predator interaction
symbiolsis any relationship in which 2 species live closely together and that benefits at least one of the species
mutualism type of symbiosis in which both species benefit from living together
commensalism type of symbiosis between 2 species in which one species benefits and the other species in neither helped nor harmed
parasitism type of symbiosis in which one organism lives with, on, or in a host and harms it
parasite the organism that benefits by living with,on, or in a host in a parasite interaction
host organism that a parasite lives on, with in or on and provides a source of energy or suitable
Created by: user-1975234
 

 



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