miles) thick ??? ??? ??? Loamy Soil composed of a mixture of sand, clay, silt, and other organic matter ??? ??? ??? Mantle The layer of the Earth between the crust and the core ??? ??? ??? Monoculture The cultivation of a single crop on a farm or in a region or country; a single, homogeneous culture without diversity or dissension ??? ??? ??? Monsoon A wind system that influences large climactic r