The features and the importance of soils are usually
inconspicuous to the average person. Soil is simply the
substrate that is walked on, that is used to grow trees
or a garden, that creates a source of dust when the
wind blows, that provides material that washes down
the hillslope during runoff, or that is bared when the
firefighter builds a fireline. However, closer examination
shows that soil is a complex matrix made up of
variable amounts of mineral particles, organic matter,
air, and water. The inorganic constituents of soils
contain a wide array of primary (for example, quartz)
and secondary (for example, clays) minerals.
The features and the importance of soils are usuallyinconspicuous to the average person. Soil is simply thesubstrate that is walked on, that is used to grow treesor a garden, that creates a source of dust when thewind blows, that provides material that washes downthe hillslope during runoff, or that is bared when thefirefighter builds a fireline. However, closer examinationshows that soil is a complex matrix made up ofvariable amounts of mineral particles, organic matter,air, and water. The inorganic constituents of soilscontain a wide array of primary (for example, quartz)and secondary (for example, clays) minerals.
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