Name the following:
(a) This soil is sticky when wet and cracks when dry.
(b) This soil is mainly used for making bricks.
(c) This soil is classified into khadar and bhangar.
(d) When heavy rainfall washes away the topmost layer of the soil.
(a) Black soil
(b) Laterite soil
(c) Alluvial soil
(d) Soil erosion