alternative biochemical career chemical chemicalengineering chemistry earthsciences energy engineering fossilfuels industrial industrialtechnology mechanical physical physicalchemistry physics powerresources professional renewable scec03 scec0355 scec0373 scec2040 scec2770 scec31 scec3110 scpc0510 scpc0515 scpc0525 scpc0560 scpc0570 scpc0573 scpc110495 scpc1973 technical technology theoretical trade trades wb004 wb035 wb038 wb043 wb057 wb062 wb063 wb075