CO2 (Carbon Dioxide)

Carbon dioxide (CO2) is a colorless gas that is naturally present in the Earth's atmosphere. It is produced by breathing, burning fossil fuels like coal and oil, and decaying organic matter. Although it makes up about 0.04% of the atmosphere, CO2 is important for life; plants use it during photosynthesis to produce oxygen. However, excessive CO2 from human activities contributes to climate change by trapping heat in the atmosphere, leading to global warming. Managing CO2 emissions is crucial for environmental sustainability and combating climate change.