Carbon Dioxide (CO2) is a colorless, odorless gas that is naturally present in Earth's atmosphere. It is produced by the respiration of animals and plants, as well as through the combustion of fossil fuels. CO2 plays a crucial role in the carbon cycle and is essential for photosynthesis in plants, which use it to produce oxygen and energy. In recent years, the increase in carbon dioxide levels due to human activities, such as industrial processes and deforestation, has raised concerns about climate change. Elevated CO2 concentrations contribute to the greenhouse effect, trapping heat in the atmosphere and leading to global warming.