koltvísyru
Koltvísyru is the Icelandic word for carbon dioxide. It is a chemical compound with the formula CO2. This compound is a colorless gas with a faint but distinct odor. It is naturally present in the Earth's atmosphere and is produced by many natural processes, including respiration, combustion, and volcanic activity. Plants absorb carbon dioxide during photosynthesis.
In human activities, the burning of fossil fuels such as coal, oil, and natural gas is a