Secondary infertility is
Patient who can't do coitus (sex)
Sterility
Impotency
It indicate previous pregnancy but failure to conceive subsequently
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
Oral polio vaccine and hepatitis first dose is given to a child at
Human population growth graph is
In vasectomy, a small part of the .................. is removed through a small incision on the scrotum.
According to $1991$ census, the number of females per $1000$ males is