Why is it important to reduce the CO2 emissions in the production of concrete, steel and aluminum? Group of answer choices Because these materials are produced mostly in other countries and taxing their production can support the US economy. Because these materials are used in nearly every building and they produce more than 50% of all the industrial sector CO2 emissions. Because the CO2 emissions produced by these three materials represents 75% of all the industrial sector emissions. Because the CO2 emissions produced by these materials are higher than the emissions produced by the building sector