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Question : An individual and a population has certain characteristics. Name these attributes with definitions. |
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Answer» SOLUTION :• A POPULATION has certain attributes that an individual organism does not. • An individual may have births and deaths, but a population has BIRTH rates and death rates. In a population these rates refer to per CAPITA births and deaths, respectively. • The rates, hence, expressed as change in numbers (increase or decrease) with respect to members of the population . •Another attribute characteristic of a population is sex ratio. • An individual is either a male or a female but a population has a sex ratio (e.g., 60 per cent of the population are females and 40 per cent males). • A population at any given time is composed of individuals of different ages. • If the age distribution (per cent individuals of a given age or age group is plotted for the population, the RESULTING structure is called an age pyramid. • For human population, the age pyramids generally show age distribution of males and females in a combined diagram. • The shape of the pyramids reflects the growth status of the population. • (a) whether it is growing, (b) stable or (c) declining. |
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