(a) The chart above gives the main divisions of Commerce, complete the chart by filling in the blank spaces labeled (i) to (viii). (b) Explain the following...

 (a) The chart above gives the main divisions of Commerce, complete the chart by filling in the blank spaces labeled (i) to (viii).

 (b) Explain the following, give one example of each:

(i) Primary production (ii) Secondary production (iii) Tertiary production.