Question

diference b/w primary ,secondary and teritary sectors

Answer 1

Primary Sector (or Agriculture sector). It includes all those economic activities which are connected with extraction and production of natural resources, e.g., agriculture, fishing, mining, etc.
(ii) Secondary Sector (or Industrial sector). It includes all activities which are concerned with the processing materials which have already been extracted at the primary stage, e.g., the mining of iron ore is primary industry, but manufacture of steel is secondary industry.
(iii) Tertiary Sector (or Service sector). It is concerned with providing support services to primary and secondary sector and includes transport, banking, insurance, warehousing, communication, advertising, etc. It facilitates smooth flow of goods and services in the economy. Importance of tertiary sector has been observed in the last decade and its contribution to GDP has also risen.
Hope it helps you

Answer 2

Primary sector :-

These Sector are directly dependent on environment as these refer to utilisation of earth's resources such as land, water, minerals etc.

Example :- Fishing, forestry, agriculture, mining and quarrying.

Secondary sector (Manufacturing sector ):-

Secondary sector add value to natural resources by transforming raw material into valuable products.

Example :- Industry

Tertiary sector (Service sector) :-

Tertiary sector include both production and exchange.The production involves the provision of services that are consumed.

Example :- Banking,communication transportation, teaching, nursing etc.