RE: Kofi is digging the ground, while Amma is watching. What would Amma See?

The growth of plants depends largely on the soil texture and it will also impact the yield of such plants. Your description of the soil is very correct

Horizon A being the topsoil is normally dark in colour. It's noted to contain a lot of organic matter. Organic matter is therefore dead plants and animals remains in the soil. The topsoil has good aeration and moderate water holding capacity. It's a place where living organisms are found. The thickness of topsoil determines the amount of organic matter present. So, if the topsoil is very thicker, it means it would contain large amount of organic matter.

Thanks for sharing.