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 level of development of the soil profile is…SS 1 Second Term Agricultural Science Lesson Note -…Soil profile important in agriculture because it?In a soil profile; the C-horizon can be described as the?The horizon of soil profile which encourages the…