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chapter 1

populations and communities

QuestionAnswer
organism a living thing
habitat An environment that provides the things the organism needs to live grow and reproduce
biotic factors the living things in a habitat
abiotic factors the nonliving things in a habitat
photosynthesis the process where plants use water,carbon dioxide, and sun to make food
population all of the members of one species in a certain area
community all of the populations that live in a certain area
ecosystem the community of organisms that live in a certain area along with thier abiotic factors
population all of the members of one species in a paticular area
community all of the different populations that live together
ecosystem the community of organisms with abiotic factors in an area.
ecology the study of living things and how they interact
estamate an aproxamation of a numberbased on a reasonable guess
birth rate the number of births in a population in a certain amount of time
death rate the number of deaths in a population in a certain amount of time
immagration when organisms join a new habitat
emigration when organisms leave a habitat
population density the amount od indaviduals in a certain sized area
limiting factors an environvental factor that causes populations to decrease
carrying capacity the most amount of populations that an environment can carry
natural selections a characteistic that makes an organism more suited to its environment
adaptaitions the behaviors and characteristics that make an organism live more succesfully in thier environment
niche how an organism makes its living
competition the struggle between organisms using the same limited factors
predation when one organism kills another for its food
predator the organism that does the killing
prey the organism that gets killed
symbiosis two related species that benefits at least one of them
mutralism a relationship when both species benefit
commensalim where one species helps and the other doesn't get harmed or helped
parasitism Where one organism benefits while the other lives in or on it and is harming it
parasite the organism that harms the other one
host the organism that gets harmed and benefits
species a group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce
Created by: gedgell
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