The horizon of soil profile which encourages the greatest level of microbial activity is? By: Sunday|Published on: Jul 4|Categories: Agricultural Science WAEC| 0 comments A. A-horizon B. B-horizon C. C-horizon D. D-horizon Correct Answer: Option A – A-horizon Users Also Read These:The level of development of the soil profile is…Which of the following farming practices encourages…The most important action in the A horizon of a soil…In a soil profile; the C-horizon can be described as the?The topmost layer of a typical soil profile is?SEE ALSO By which of the following ways is the agricultural production in Nigeria affected by topography