Arrange these statements in corrent sequence of preparation of green manure.
(a) Green plants are decomposed in soil.
(b) Green plants are cultivated for preparing manure of crop plants parts are used.
(c) Plants are ploughed and mixed into the soil.
(d) After decomposition it becomes green manure.

Explanation

(b) `rarr` (c ) `rarr` (a) `rarr` (d).