Deposition is the process in which water vapour in the atmosphere condenses directly into ice on cold surfaces, such as the ground, trees, or buildings.

CO2 (carbon dioxide) is a gas that is released into the atmosphere through human activities, such as burning fossil fuels. CO2 is a greenhouse gas, which means that it traps heat in the atmosphere and contributes to global warming.

While CO2 is not directly related to deposition, there are indirect links between the two. For example, global warming caused by CO2 emissions can lead to changes in the climate, which can in turn affect the frequency and intensity of deposition events. Additionally, deposition can affect the amount of CO2 in the atmosphere. When water vapour freezes into ice, it releases CO2 into the atmosphere, which can contribute to global warming.

Overall, deposition is a complex process that is influenced by a variety of factors, including temperature, humidity, and the amount of water vapour in the atmosphere. CO2 is a gas that can contribute to global warming, and while it is not directly related to deposition, there are indirect links between the two.