Is it true that carbon dioxide is a greenhouse gas?

Answer 1

The most common greenhouse gas for the natural greenhouse effect is water vapour. Man has no control over its levels. When it gets too high, it falls as rain.

The most common greenhouse gas responsible for the accelerated greenhouse effect is carbon dioxide (CO2), the high levels of which we are responsible for. CO2 is having the largest effect on the recent increases in global temperature.

Answer 2

Carbon dioxide is neither the most abundant nor the most potent greenhouse gas, but it is the greenhouse gas considered to be principally responsible for the enhanced greenhouse effect that causes global warming and climate change. Carbon dioxide differs from the most abundant greenhouse gas, water vapour, in that human activities can increase its atmospheric concentration. When we burn fossil fuels such as coal, oil and natural gas, we add to the atmospheric concentration of carbon dioxide. This has been going on since the beginning of the Industrial Age, and the level of carbon dioxide in the atmosphere has increased in that time by more than 35 per cent, from the long-term range of 260-280 parts per million (ppm) to the present level of over 380 ppm.

As the atmospheric concentration of carbon dioxide increases, it traps more heat in the atmosphere and adds to global warming.

Answer 3

Yes, it is the most abundant "gas," but there is much more water vapor (water as a gas) in the atmosphere than CO2.

Answer 4

Yes. Any three-or-more-atom-gas is a greenhouse gas, and carbon dioxide has three atoms, one carbon and two oxygen.