What do you mean by agriculture and what are agricultural activities

Agriculture is the backbone of Indian economy. Agriculture is the practice and science of growing crops by cultivating the land.
Agricultural activities are as follows :
(i) Primary activities : In primary activities,
agricultural activities are included such as to grow foodgrains, pulses, vegetables, sugarcane, cotton, oilseeds, jute, etc.
(ii) Secondary activities : Allied activities are
included in it as animal husbandary, poultry farm, dairy farming, etc.