Four Types of Soil

Soil is the "unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants," according to the Soil Science Society of America. Soil is categorized based on a number of factors, including its color, moisture level, structure, texture and pH. There are four...

Introduction While I was a student in seminary, I went through one of those typical stages through which the immature pass. I was convinced that all the seminary needed to teach was “content,” and that they should do away with all of the “methods” courses. One of the methods courses I felt was unnecessary was that of homiletics, teaching men how to deliver their sermons. One day I found an ally, a fellow-student who felt just as strongly on this matter as I did.

The four basic types of soil are sand, silt, clay and loam. Loam, considered a perfect soil, is a mixture of silt, clay and sand. Sand is gritty and contains small particles of minerals and rocks,...