Soil layers, listed from the surface down, are __________.
surface litter, topsoil, leaching zone, subsoil, and bedrock
bedrock, topsoil, surface litter, subsoil, and leaching zone
surface litter, subsoil, topsoil, bedrock, and leaching zone
surface litter, topsoil, leaching zone, subsoil, and bedrock
bedrock, topsoil, surface litter, subsoil, and leaching zone
surface litter, subsoil, topsoil, bedrock, and leaching zone