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ch.21

sections 1-3 only

QuestionAnswer
A living thing organism
The specific environment that provides the things an organism needs to live, grow, and reproduce. habitat
A living part of an organism's habitat. biotic factor
A nonliving part of an organism's habitat. abiotic factor
The process in which some organisms use water along with sunlight and carbon dioxide to make their own food. photosynthesis
A group of organisms that are physically sinilar and can mate with each other and produce offspring that can also mate and produce species
all of the members of one one species in a particular area. population
all of the different population that live together in an area. community
The coummunity of organisms that live in a particular area, along with their nonliving surroundings ecosystem
the study of how organisms interact with their environment. ecology
an approximation of a number based on reasonable assumptions estimate
the number of births in a population in a certain amount of time. birth rate
the number of deaths in a population in a certain amount of time. death rate
moving into a population. immigration
leaving a population emigration
the number of individuals in an area of specific space. population density
an environmental factor that prevents a population from increasing. limiting factor
the largest population that an area can support. carrying capacity
a characteristic that makes an individual better suited to its environmental . natural selection
A behavior or physical characteristic that allows an organism to survive or reproduce in its environment. adaptations
The role of an organism in its habitat niche
The struggle between organisms to survive as they attempt to use the same limited resource competition
An interaction in which one organism kills another for food predation
The organism that does the killing in a predation interaction predator
An organism that is killed and eaten by another organism prey
A close relationship between two organisms of different species that benefit at least one of the organisms symbiosis
A close relationship between organisms of two species in which both organisms benefit mutualism
A relationship between two species in which one species benefits and the other is neither helped or harmed commensalism
A relationship in which one organism lives on or in a host and harms it parasitism
The organism the benefits by living on or in a host in a parasitism interaction parasite
The organism that a parasite lives in or on host
Created by: Student@rsms
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