Answer:
1. Wood- has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper.
2. Iron- is most used to manufacture steel, used in civil engineering (reinforced concrete, girders etc) and in manufacturing.
3. Oil- use petroleum products to propel vehicles, to heat buildings, and to produce electricity. In the industrial sector, the petrochemical industry uses petroleum as a raw material to make products such as plastics, polyurethane, solvents, and hundreds of other intermediate and end-user goods.
