The burning of coal and oil for energy affects the carbon cycle in which way?
A. It increases the amount of carbon in existence.
B. It decreases the amount of carbon in existence.
C. It increases the amount of atmospheric carbon.
D. It does not affect the carbon cycle.
C This is because the burning of the two fossil fuels releases carbon dioxide into the atmosphere it does not affect the actual amount of carbon on Earth, which stays constant.
