Carbon dioxide is a colorless, non-organic compound that is a gas at room temperature and comprises about 0.03 percent of Earth's atmosphere. It is produced when materials that contain carbon are combusted, and it is one... More » Science Environmental Science

Carbon dioxide is a gas with a chemical formula of CO2, indicating that it is a carbon atom double-bonded to two oxygen atoms. It is made from burning wood, fuel or anything else that contains carbon. More »

It is colorless and odorless, and it has a freezing point of -55.6 degrees Celsius. Carbon dioxide is soluble in water, acetone and ethanol. It is an atmospheric gas that is produced by both combustion and respiration. More »

The carbon dioxide and oxygen cycles work through processes that convert carbon in the atmosphere into oxygen and transform oxygen back into carbon dioxide. Plants are the main producers of oxygen through a process calle... More »

Animals help maintain the Earth's natural environments by predating upon plants and other animals, pollinating various plants, and exhaling carbon dioxide, which green plants require to live. Additionally, animals help t... More »

Carbon constitutes the sixth-most-abundant element in the universe, accounts for 20 percent of the weight of almost all living organisms, and makes up roughly 0.04 percent of the Earth's atmosphere in the form of carbon ... More » Science Chemistry

According to, the atmosphere on Mars is around 100 times thinner compared to that of the Earth's and is composed of about 95 percent carbon dioxide. However, the Martian atmosphere is still thick enough to sust... More »