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Q.

In which year did the world’s population reach one billion?


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a

1804

b

1904

c

1885

d

1850 

answer is A.

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Detailed Solution

In 1804 the world’s population reached one billion. The number of live births per one thousand people is called the birth rate. Death rates are those rates that cause death per thousand people. The natural reason for population change is birth and death. The country’s difference between death and birth rates is considered a natural growth rate.
 
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