In India number of females per thousands males had been constantly decreasing but in which of follow

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3.Reproductive Health

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In India the number of females per thousands males had been constantly decreasing but in which of the following years, the number had been increased

A

$1971-1981$

B

$1981-1991$

C

$1951-1961$

D

$1961-1971$

Solution

It's Obvious

Standard 12

Biology

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