a. meaning : distribution of pop. on the basis of occupation
b. types of occupation : primary, secondary and tertiary
c. primary activities include agriculture, forestry, animal husbandry
d. secondary activities include manufacturing industry, building and construction work
e. tertiary activities include transport, communication, commerce
f. in india, 64% of pop. is engaged only in agriculture
g. only 13% and 20% people are engaged in secondary and tertiary activities.
h. however, there has been an occupational shift to secondary and tertiary sectors due to industrialisation and urbanisation.