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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Describe diagrammatic representation of age structure showing declining population. - Biology

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प्रश्न

Describe diagrammatic representation of age structure showing declining population.

थोडक्यात उत्तर

उत्तर

a. The relative proportion of individuals of various age groups in the population is called
age structure of the population.
b. Age structure of a population is the percentage of individuals of different age groups such as young (0-14 years), adults (15-59 years) and old (60 years and above).
c. The distribution of these age groups determine the trend of population.

d. In declining population, number of post reproductive age group is large whereas the number of pre reproductive age group is small.
e. Thus, the age structure shows declining population.

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Population
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2016-2017 (March)

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