Which among the following layers of soil, contains the hardest soil/rock? Choose the option that gives the correct layer with respect to the figure above and also labels it correctly.
d – Bedrock
Bedrock is the hardest part of the soil. It is the deepest layer of the soil profile and it contains hard rocks. Humus is the dead and decaying matter and is the topmost part of the soil. Subsoil lies below the topsoil.