Which of these are characteristics of black soil?
Rich in minerals
Highest humus content
Rich in sand
Good for growing potato
The layer of soil which is not rich in humus but rich in minerals is ___ .
The layer of soil which is not rich in humus but rich in minerals is ___ (Fill in the blank).
Identify the layer of soil which is not rich in humus but rich in minerals. ___ (Fill in the blank).