It depends on where it is forming, natural geology, climate, etc... but it is considered a non-renewable resource because on average it takes 100 to 500 years for 1 inch of topsoil to "grow."
It is also interesting to note it grows downward as the rock breaks down, not upwards as one might imagine.
100 years
It takes about 1,000 years
three hundred years
depending on the climate and other factors it takes about 1,000 years
1000 years
about 1,000
500 to 1,000 years
100 years
It takes about 1,000 years
It takes about 1,000 years
three hundred years
depending on the climate and other factors it takes about 1,000 years
Mostly when a river flows through a flat area with soft soil.
dry hot or warm because it is hot and take a long time to form
dry hot or warm because it is hot and take a long time to form
One Billion!
6minute