Within this prokaryotic group, there are the filamentous microbes known as actinomycetes. These conditions create an ideal ecosystem for bacteria, so all soils contain vast populations of bacteria, usually over 1 million per gram of soil.īacteria are the simplest of microorganisms, known as prokaryotes. Within and between the aggregates are voids or pores that visually contain both air and water. Surface soils are a heterogeneous mixture of inorganic and organic particles that combine together to form secondary aggregates. Charles Gerba - The University of Arizonaĭemonstrating Authors: Bradley Schmitz and Luisa Ikner
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