The creativity of the Almighty continues in the properties of semen after all the characteristics that must be met until semen has the ability to fertilize. Another thing is that the semen is not acidic but slightly alkaline, since the measurement pH Bah 7.5 Unlike women's vagina, which is acidic and in this wisdom If the semen was acidic, the semen would die if the vaginal nature of the vagina was alkaline, but the presence of alkalinity in the semen and acid in the vagina provided a neutral medium for the passage of the spermatozoa safely. This paralysis fails when a woman's vagina is as acidic as some women may be the reason for not being born as a result of the death of most semen.