OBJECTIVE FORESTRY

Detailed explanation-1: -Bedrock is the hard, solid rock beneath surface materials such as soil and gravel. Bedrock also underlies sand and other sediments on the ocean floor. Bedrock is consolidated rock, meaning it is solid and tightly bound. Overlying material is often unconsolidated rock, which is made up of loose particles.

Detailed explanation-2: -Subsoil. The topsoil is relatively thin but it has most of the soil’s nutrients. Just below the topsoil layer is the subsoil layer. The subsoil may contain some broken down organic matter but it is mostly made of weathered rocks and clay minerals.

Detailed explanation-3: -Soil is comprised of many layers, called horizons. The bottommost horizon is called bedrock.

Detailed explanation-4: -Bedrock is the solid rock that underlies looser surface material. An exposed portion of bedrock is often called an outcrop. The various kinds of broken and weathered rock material, such as soil and subsoil, that may overlie the bedrock are known as regolith.