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Chapter 1

Populations and Communities

QuestionAnswer
organism a living thing
habitat a place were it is suitable for a organism to live
biotic factor a living part of an organisms habitat
abiotic factor a nonliving part of an organisms factor
photosynthesis the process in which organisms use water along with sunlight and carbon dioxide to make food
species a group of organisms that are phisically similar and can and can mate with each other and produce offsprings that can also mate and reproduce
population all of the members of a species in a particular area
photosynthesis the process in which organisms use water along with sunlight and carbon dioxide to make food
species a group of organisms that are phisically similar and can and can mate with each other and produce offsprings that can also mate and reproduce
population all of the members of a species in a particular area
community all the different populations that live together in a area
photosynthesis the process in which organisms use water along with sunlight and carbon dioxide to make food
species a group of organisms that are phisically similar and can and can mate with each other and produce offsprings that can also mate and reproduce
population all of the members of a species in a particular area
community all the different populations that live together in a area
photosynthesis the process in which organisms use water along with sunlight and carbon dioxide to make food
species a group of organisms that are phisically similar and can and can mate with each other and produce offsprings that can also mate and reproduce
population all of the members of a species in a particular area
community all the different populations that live together in a area
ecosystem the community of organisms that live in a particular area along with their nonliving surroundings
ecology the study of how living things interact with each other and their environment
estimate a approximation of a number, based on a reasonable assumptions
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
immigration moving into a population
emigration leaving a population
population density the number of individuals in a specific area
limiting factors an environmental factor that causes a population to decrease
carrying capacity the largest population that an area can support
natural selection a process by which characteristics that make an individual better suited to its environment become more common to a species
adaptions a behavior or physical characteristic that allows a organism to live successfully in its environment
niche the role of a organism its habitat ,or how it makes its living
competition the struggle between organisms to survive as they attempt to use the same limited resource
predation a interactive in which one organism kills another for food
predator the organism that does killing in a predation interaction
prey the organism that gets killed and eaten by another organism
symbiosis a close relationship between two species that benefits at least one of the species
mutualism a relationship between two species in which both species benefit
commensalism a relationship between two species in which one species benefits and the other is neither helped nor harmed
parasitism a relationship in which one organism lives on or in a host and harms it
parasite the organism that benefits by living on or in a host in a parasitism interaction
host the organism that a parasite lives in or on in a parasitism interaction
Created by: bastet1245