Currently, fossil fuels are one of the world’s primary energy sources. The graph shows the amount of carbon that has been released in the atmosphere since 1900 due to the burning of fossil fuels. A. The burning of fossil fuels has increased the total energy in the world because the process of combustion releases energy.
B. The burning of fossil fuels has decreased the total energy in the world because it has depleted our fossil fuel supplies.
C. The burning of fossil fuels had decreased the total energy in the world because energy is lost during the process of combustion.
D. The burning of fossil fuels has not changed the total energy in the world because it converts potential energy to thermal energy.