It's simple
when 2 people marry , they have kids
those kids have their kids
then their kids and so on
so population increases
more detailed
Since most fertility occurs in marriage, a rise in the age of marriage can reduce world fertility. ... Later marriage means less female fertility exposed to intercourse, which can particularly affect already subfecund women. The number of women in professions and careers also dampens fertility rates.
<em>Kidney stones can stay in the kidney or travel down the urinary tract. A small stone may pass on its own, causing little or no pain. A larger stone may get stuck along the urinary tract. When a stone gets stuck it can block the flow of urine this causes severe pain and bleeding.</em>
Explain more maybe if you explain a bit more i can help maybe
