Homonym: CO2 (Carbon)
CO2, or carbon dioxide, is a colorless gas that is naturally present in the Earth's atmosphere. It is produced by the respiration of animals and plants, as well as by the burning of fossil fuels like coal, oil, and natural gas. Photosynthesis, the process by which plants convert sunlight into energy, uses CO2 to produce oxygen, making it essential for life on Earth.
In recent years, the levels of CO2 in the atmosphere have increased significantly due to human activities. This rise contributes to climate change and global warming, as CO2 traps heat in the atmosphere. Reducing CO2 emissions is crucial for protecting our planet's environment and ensuring a sustainable future.