_________ are soils in which more than half of the parent mineral matter is volcanic ash and appear very dark in colour.
A. Desert soil
B. Volcanic soil
C. Alluvial soil
D. Clayey soil
Answer:B
_________ are soils in which more than half of the parent mineral matter is volcanic ash and appear very dark in colour.
A. Desert soil B. Volcanic soil C. Alluvial soil D. Clayey soil