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Q.

Which one of the reasons are the attributes of the population?

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a

 Age

b

Natality Rate and Mortality Rate

c

Sex

d

 Pre-reproductive

answer is B.

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Detailed Solution

Concept: Natality or Birth RateNatality or birth rate is the rate at which new individuals are born in a population per unit of time. It can be statistically measured only for a population and not for an existent. An existent can only have birth but not a birth rate. 

The birth rate is calculated by dividing the total number of seeds produced or births by the total population in a given time. 
Mortality RateThe mortality rate or death rate is the number of individualities of a population loss due to death per unit of time. The death rate is also told by environmental factors that lead to a rise in deaths by predation, competition for coffers, etc.

Hence, the correct answer is option B.

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