This blog contains notes, questions, answers and solved past papers for O levels Pakistan Environment 2059 Geography.

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Secondary Industry as a System

  Secondary and Tertiary Industries ·          Secondary industry is concerned with changing raw material from the primary sector or s...

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This blog contains notes, questions, answers and solved past papers for O levels Pakistan Environment 2059 Geography.

Sunday, September 13, 2020

Secondary Industry as a System


  Secondary and Tertiary Industries ·         Secondary industry is concerned with changing raw material from the primary sector or secondary products, to form a semi-finished or finished product. ·         It...