In which layer of the soil profile do most biological activities occur? by Sunday | Jan 22 | Agricultural Science WAEC | 0 comments A. D-horizone B. C-horizone C. B-horizone D. A-horizone Correct Answer: Option D D. A-horizone Users Also Read These:The most predominant action in the first horizon of…In which layer of the soil profile do most…The horizon of soil profile which encourages the…A soil profile refers to the?In a semi conductor junction diode; as the depletion…