B. What layer of the soil of the soil is being described in each number? Choose the letter of the correct answer in the box and write it on the blank provided. A. topsoil B. sub-soil C. parent rock D. bedrock 1. Does not contain needed nutrients and water for plant growth 2. Uppermost layer of the soil 3. Lowest of the soil layers 4. Have rocks that are slowly breaking apart 5. No plant can survive in this layer 6. Composed of loosely arranged rocks, sand, and clay 7. Plants grow easily on this layer 8. Rich with minerals that drain from topsoil 9. Exposed to very little weathering 10. Made of large boulders and gravel​