Carbon dioxide (CO2) is a colorless, odorless gas that is naturally present in the Earth's atmosphere. It is produced during respiration by all animals, plants, fungi, and microorganisms that depend on living and decaying organic matter. It is also produced during the combustion of fossil fuels and biomass, as well as by the decay of organic matter. Carbon dioxide is a crucial component of the carbon cycle, which is the movement of carbon through the Earth's atmosphere, hydrosphere, geosphere, and biosphere.
Here are some key points to remember about carbon dioxide:
Here are some study questions to help you understand carbon dioxide: