| Answer | Crossword Clue |
|---|---|
| OZONE | Kind of layer protecting the earth |
| MANTLE | Layer of the earth |
| CRUST | Outer layer of the Earth |
| soils | the loose surface layer of the earth |
| soil | the loose surface layer of the earth |
| subsoil | to plow the layer of earth below the surface |
| MANTLE | Layer of the earth between the crust and the core |
| subsoiling | SUBSOIL, to plow the layer of earth below the surface |
| subsoils | SUBSOIL, to plow the layer of earth below the surface |
| subsoiled | SUBSOIL, to plow the layer of earth below the surface |
