GEOLOGY

Detailed explanation-1: -Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.

Detailed explanation-2: -Global warming is primarily a problem of too much carbon dioxide in the atmosphere. This carbon overload is caused mainly when we burn fossil fuels like coal, oil and gas or cut down and burn forests.

Detailed explanation-3: -Indeed, carbon dioxide, a byproduct of fossil fuel combustion, is the principal greenhouse gas contributing to global warming. However, other greenhouse gases including methane, nitrous oxide, and a number of industrial-process gases also are important contributors to climate change.

Detailed explanation-4: -When hydrocarbon fuels (i.e. wood, coal, natural gas, gasoline, and oil) are burned, carbon dioxide is released. During combustion or burning, carbon from fossil fuels combine with oxygen in the air to form carbon dioxide and water vapor.

Detailed explanation-5: -Generating power. Generating electricity and heat by burning fossil fuels causes a large chunk of global emissions. Manufacturing goods. Cutting down forests. Using transportation. Producing food. Powering buildings. Consuming too much.