1.   By chance, these three villages were built on a spot where the soil contains erionite.

2.   Globally, soil contains about five times as much carbon as vegetation.

3.   If it feels silky or smooth, the soil contains a lot of silt, which are small mineral particles.

4.   If the soil contains iron rust, iron oxide, clay, granite and other signal-inhibitors, it could create a problem.

5.   Researchers have discovered that gold-laden soil often contains an abundance of spores belonging to a certain bacterium.

6.   Second, soils often contain elements that neutralize acid precipitation.

7.   Soil tests show the soil contains an excess of phosphorus, which may be causing iron and zinc deficiencies.

8.   The soil contained more than twice the level of Empta that would be considered a trace, the director of Central Intelligence, George Tenet, told senators Wednesday.

9.   The soil contains chromium not present in the rocks, and much higher concentrations of sulfur and chlorine.

10.   The soil contains microorganisms that help break down organic matter.