The activity of these organisms, the type of rock particles ... Pollution kills microbial life in the soil; deforestation and development disturb soil structure making it vulnerable to erosion ...

When European-American settlers first began ploughing in Iowa, they found the weather and local geology had combined this organic mulch with sand and silt to form a nutrient-rich type of soil ...

Water is a unique compound that is essential to life on Earth ... are important processes that govern microbial community structure, soil mineralogy, soil solution chemistry , and pollutant ...