Biology Questions and Answers
rectangles each representing the
number of individuals included in ageranges into which a population is
divided. Generally the lower age ranges
are representethe pyramid, alwaysd more to below higherthe bottom o f
ranges, and the variable dimension that
represents ththe width (there are age pyramidse number of individuals is
however in which the variable
dimension is the height).
- What are the analyses
provided by the study of
human age pyramids?
The study of human age pyramids can
provide the following proportion of individuals at ananalyses:
economically active age; proportion of
elderly (indicatingpension and health systems); pr the quality of theoportion (^)
of children and youth (indicating need
for job generation and educationalservices); reproductive profile (shows (^)
the population growth tendency);
postnatalof the health system, hy survival rate (indicatesgiene quality
conditions, nutrition and poverty);
longevity profile; etc.
It is possible to predict whether a
population bindustrialized elongs to a society or to a rich anpoord (^)
country since thpyramids differ accordine patterns og to thf the ageese
conditions.
- What are the main
characteristics of the age
pyramids of developed
countries?
In a stabilized human population theage pyramid the reproduction has a narate is not rrower so high. Thebase since (^)
adult age ranges are generally wider
than the infantile ranpractice there is no population ges showing growth.that in
There is a proportionally high number of
older individuals meaning that the lifequality is elevated and the population
has access to health services and good
nutrition. Tpyramids ofhese are features of the age developed countries.
- What is the typical
conformation of the age
pyramids of underdeveloped
countries?
The age pyramids of peripheral
countries or have characteristicsunderdeveloped countries related to the
poverty of such populations, with a
wider base and narrow age range, if much wider than the otherapex. The base (^)
levels, indicates a high birth rate. The
levels just aban impressive reduction iove the base may pn poorerresent
populations due to infant mortality.
Ranges that ralso wide showing epresent thfuture pressure oe youth aren (^)
job and habitation needs. The widths of
the rectangles dto the apex that represents the elderly,iminish as age increases
demonstrating diprecarious health servicesfficult life conditions, and low life (^)
expectancy.
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