Topsoil or bedrock?

Exercise and reference answers

Left

A horizon

Items

1. Region

   A horizon

   Item

   Rich in humus

2. Region

   A horizon

   Item

   Finest particles

3. Region

   C horizon

   Item

   Solid bedrock

4. Region

   C horizon

   Item

   Least weathered

5. Region

   both

   Item

   In the profile

6. Region

   both

   Item

   Under ground

Right

C horizon

Instructions

Tap an item, then the layer it describes. Some apply to both.