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Biology Ch 19.1
Ch.19 vocab
Term | Definition |
---|---|
population | a group of organisms of the same species that live in a specific geographical area and interbreed |
population density | the number of individuals of the same species that live in a given unit of area |
dispersion | in optics, the process of separating a wave (such as white light) of different frequencies into its individual component waves (the different colors) |
birth rate | the number of births that occur in a period of time in a given area |
death rate | the number of deaths occurring in a period of time |
life expectancy | the average length of time that an individual is expected to live |
age structure | the classification of members of a population into groups according to age or the distribution of members of a population in terms of age groups |
survivorship | the percentage of newborn individuals in a population that can be expected to survive to a given age |