Global increases in carbon dioxide concentration are due primarily to
A)nuclear waste.
B)chlorofluorocarbons (CFCs)used in spray cans, refrigerators, and air conditioners.
C)use of fossil fuels.
D)fumigants for crops and pest control.

Question

Quizplus · Accepted Answer

The primary source of global increases in carbon dioxide concentration is the use of fossil fuels, such as coal, oil, and natural gas. When these fuels are burned for energy, they release carbon dioxide—a greenhouse gas—into the atmosphere, contributing significantly to climate change.

Global Increases in Carbon Dioxide Concentration Are Due Primarily to