A student makes a list of all the soils layers in a temperate region. Which layer would be located the farthest from the surface of the Earth.

Question

organic layer (O)
topsoil (A)
parent material (C)
bedrock (R)

Answer 1

The layer located the farthest from the surface of the Earth in a temperate region is the bedrock (R) layer. The order from the surface down would typically be: organic layer (O), topsoil (A), subsoil (B), parent material (C), and then bedrock (R) at the bottom.