Question

what do you mean by life expectancy at birth​

Answer 1

The statistic “Life expectancy at birth” actually refers to the average number of years a newborn is expected to live if mortality patterns at the time of its birth remain constant in the future.

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Answer 2

in social the life expectancy at birth about

60-70 years as now a days .but in biology tells the life span depend on eating of nutritional food.