Carbon dioxide (co2) is the gas that is mainly responsible for global warming (the greenhouse effect). the burning of fossil fuels is a major cause of the increased concentration of co2 in the atmosphere. carbon dioxide is also the end product of metabolism (see sample problem 3.4). using glucose as an example of food, calculate the annual human production ofco2ingrams, assuming that each person consumes 5.0×102g of glucose per day, that the world's population is 6.5 billion, and that there are 365 days in a year.