A healthy soil is made up of about 50% porous spaces, 45% pulverized rock and 5% organic matter. It is sometimes called the living skin of the Earth. It rests on a bed of rock-the parent material from which its mineral, non-living portion was formed.
Women most likely to have affairs between age of 25 and 34, study reveals. 1  Nearly two thirds of women opt for affairs lasting 1-3 months. 2  Only 19.6 per cent say they are looking for a one-night stand.
In most hunter-gatherers, women marry at around 17-19 years old, and men in their 20s. This is because that's when they're old enough to have and properly care for children. It's not when they first have their periods; they usually have their first children 3-4 years after their first periods.