Term
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Definition
| graphical representations of population' ages |
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Term
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Definition
| the fraction of solar energy that is reflected back into space |
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Term
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Definition
| the amount that the population would grow if there were unlimited resources in its environment |
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Term
| birth rate (crude birth rate) |
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Definition
| the number of live births per 1000 members of the population in a year |
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Term
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Definition
| the maximum population size that can be supported by the available resources in a region |
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Term
| death rate (crude death rate) |
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Definition
| is equal to the number of deaths per 1000 members of the population in a year |
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Term
| demographic transition model |
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Definition
| a model that is used to predict population trends based on the birth and death rates as well as economic status of a population |
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Term
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Definition
| the amount of the earth's surface that is required to supply the needs of and dispose of the waste from a particular population |
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Term
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Definition
| the movement of individuals out of a population |
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Term
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Definition
| the random fluctuations in the frequency of the appearance of a gene in a small isolated population, presumably owing to chance, rather than natural selction |
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Term
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Definition
| the movement of individuals into a population |
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Term
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Definition
| organisms that reproduce later in life, produce fewer offspring, and devote significant time and energy to the nurturing of their offspring |
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Term
| logistic population growth |
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Definition
| when a population is well below the size dictated by the carrying capacity of its region, it will grow exponentially, but as it approaches the carrying capacity, its growth rate will decrease and the size of the population will eventually become stable |
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Term
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Definition
| the number of individuals of a population that inhabit a certain unit of land or water area |
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Term
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Definition
| the number of children a couple must have in order to replace themselves in a population |
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Term
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Definition
| organisms that reproduce early in life and often have a high capacity for reproductive growth |
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Term
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Definition
| the number of children an average woman will bear during her lifetime; this information is based on an analysis of data from preceding years in the population question |
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Term
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Definition
| (birth rate - death rate) / 10 |
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Term
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Definition
I= PxAxT
where:
P=population size
A=affluence
T=level of technology |
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