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Name: Annabelle
Status: student
Grade: 4-5
Location: TX
Country: USA
Date: N/A 


Question:
Is soil a renewable resource?



Replies:
Well, yes and no. If we treat the soil carefully using good gardening and farming methods, the soil is renewable. However, if we cover the soil with tar from a parking lot, that soil is lost as a renewable resource. The same applies to water. If we use it wisely, it renews itself, but if we pollute it with chemicals and sludge it may be lost for a long time as a resource. It depends upon us.

Vince Calder


Annabelle,

In general, a resource may be defined as either: “A concentration of naturally occurring solid, liquid or gaseous material in or on the earth's crust, in such a form and amount that economic extraction of a commodity from the concentration is currently or potentially feasible." Or: "Any form of matter or energy obtained from the physical environment that meets human needs."

For matter to be considered a resource, we must take into account the current technology, economics, cultural beliefs, human ingenuity, environmental effects of finding and using it, geologic plausibility, and economic feasibility.

I would argue that the term renewable resource be discontinued because resources are commonly classified by rate of renewal (three types).

Non-renewable resources exist on Earth in a fixed quantity, are replenished over geologic time (millions of year), are generally mineral or fossil fuel in origin, are exhaustible, or it costs too much to extract. Some examples of resources that fit this definition include: oil, natural gas, coal, copper, and uranium.

Potentially renewable resources are replenished on short time scale (months to years) and are generally biological or solar. The rate of use of this type of resource is important – it must be sustainable. Potentially renewable resources can become non-renewable resources if not managed sustainably. Some refer to potentially renewable resources and sustainable resources. The use of the term renewable resource does not reflect the true nature of this type of resource – a resource is only renewable if it is managed sustainably. Some examples of resources that are potentially renewable include biogas, groundwater, fish, forests, air, soil water, and plants.

Perpetual resources are essentially inexhaustible and are generally solar in origin. Some examples of resources that fit this description include: solar, wind, tides, flowing water, and gravitational potential energy.

So, I would consider soil to be a potentially renewable resource.

Les
---
Leslie Kanat, Ph.D.
Professor of Geology



Soil is being made all the time, but very slowly. So, if you lose soil on your farm, it takes so long to be replaced that it is not really renewable as far as humans are concerned.

Soil is lost by erosion. It can be blown away by the wind or washed away by water.

R. W. "Bob" Avakian
Instructor
B.S. Earth Sciences; M.S. Geophysics
Oklahoma State Univ. Inst. of Technology



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