Population and communities
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| organism | a living thing
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| habitat | an environment that provides the things the organism needs to live,grow and reproduce
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| biotic factors | a living part in an organism's habitat
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| abiotic factors | a nonliving thing part of an organism's habitat
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| photosynthesis | the process in which organisms use water, along with sunlight and carbon dioxide to make their own food
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| species | a group that are physically similar and can mate with each other and produce offspring that can also mate and reproduce
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| population | all the members of one species in a particular area
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| community | all the different populations that live together in an area
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| Ecosystem | The community of organisms that live in a particular area along with their nonliving surrounding.
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| Ecology | The study of how living things interact with e ach other and their environment
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| estimate | An appoximation of a number based on reasonable assumptions
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| birth rate | the number of births in a population in a certain amount of time in a certain area
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| death rate | the number of deaths in a population in a certain amount of time ina cerain area
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| immigration | moving into a population
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| emmigration | leaving a population
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| population density | the number of individuals in an area of specific size
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| limiting factor | an environmental factor that causes a population to decrease
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| carring capacity | the largest population that an area can support
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| natural selection | A process by which characteristics that make an individual better suited to its environment become common in a species
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| adaption | the behavior and physical characteristics the allow organisms to live sucessfuly in their envirenment
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| niche | the role of an organism in its habitat or how it makes its living
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| compitition | the struggle between organisms to survive as they attempt to use the same limited sorce
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| predation | an interaction which on organism kills another organism for food
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| predator | the organism that does the killing in a predition interaction
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| prey | an organism that is killed and eaten by anther organism
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| symbosis | a close relationship between two species that benefits at least one of the species
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| mutualism | The relationship between two species in which both species benefit.
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| commensalism | A relationship between two species in which one species benefits and the other is neither helped or harmed
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| parasitism | A relationship in which one organism lives on or in a host and harms it.
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| parasite | The organism that benefits by living on or in a host in a parasitism interaction
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| host | The organism that a parasite lives in or on in a parasitism interaction
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Created by:
rnagel
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