100 years
hundreds of years
Depends on the length of the hole.
1
Approx 10.3 US gallons.
There are 16 squares with sides of a quarter inch in one square inch.
hundreds of years
This depends on what type of topsoil, its composition, the surrounding climate, etc. But usually it'll take about 800-1000 years for an inch to form.
350-500 years
Depending on geographic location, the natural build-up of one inch of topsoil requires about 400 - 10,000 years. Certain locations can require less, and others, even more.
There is no guarantee that it will ever recover. The layer of topsoil in a rainforest is extremely thin. Because there is so much competition for food in the forest, little material builds up to form topsoil. When the trees are cut down and the thin layer of topsoil is exposed to sun, wind, and water, it is more susceptible to erosion. When the topsoil disappears, the land becomes un-arable, and becomes essentially desert.
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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.
Fertile is renewable albeit at a very slow rate. It can take up to one thousand years to renew one inch of topsoil that is washed or blown away.
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.
It depends on where your at, in the rainforest it can happen in a year, while in other places take hunreds of years.
It takes about 1,000 years
It takes about 1,000 years