Soil Horizons a. Horizon A d. Horizon R b. Horizon B e. Horizon O c. Horizon C __ 14. provides the best environment for plant grawth(roots); known as topsoil __ 15. the underlying bedrock such as limestone, sandstone or granite. __ 16. Made of broken up rocks & parent material. __ 17. Referred to as the subsoil; chemicals leached from the A Horizon accumulate here

## Step 1<br />The problem involves matching the descriptions of soil horizons with their corresponding labels. The soil horizons are labeled as A, B, C, O, and R.<br /><br />## Step 2<br />The first description talks about the horizon that provides the best environment for plant growth (roots) and is known as topsoil. This description matches the characteristics of Horizon A, which is the topmost layer of soil and is rich in organic matter, providing a good environment for plant growth.<br /><br />## Step 3<br />The second description refers to the underlying bedrock such as limestone, sandstone, or granite. This description matches the characteristics of Horizon R, which is the layer of soil that consists of unweathered parent material and bedrock.<br /><br />## Step 4<br />The third description talks about a horizon made of broken up rocks and parent material. This description matches the characteristics of Horizon C, which is the layer of soil that consists of weathered parent material and is less organic than the A horizon.<br /><br />## Step 5<br />The fourth description refers to the horizon where chemicals leached from the A horizon accumulate. This description matches the characteristics of Horizon B, which is the layer of soil where leaching from the A horizon accumulates.