Decomposition of soil organic matter is mainly caused by? by Sunday | Jan 12 | Agricultural Science WAEC | 0 comments A. bacteria B. algae C. fungi D. nematodes Correct Answer: Option A – bacteria Users Also Read These:The duality of matter implies that matter?The gas obtained as a product of anaerobic action on…Which of the following statement is a disadvantage…The process by which organic matter is decomposed…The thin layer of unconsolidated mineral particles…