According to a November 2019 report by CNN, the startup company Heliogen has devised a high-heat solar oven that can be used to create concrete and steel without the use of fossil fuels. Currently, the creation of these materials produces 6.5% of the world's carbon emissions from fossil fuels. Use this information to answer the questions that follow.
a. What does the 6.5% represent in this scenario? (A) a relative change, (B) a fraction of the total, or (C) an absolute change. b (Report only the letter as your answer.)
b. If the world's total carbon emissions in 2018 was 36.8 billion tons, how much of that carbon came from the creation of these building materials? Give your answer in billions of tons and round to two decimal places. Blank 2 billion tons