
"Energy and matter can enter and leave"

This is because an open system is one that allows for the exchange of both energy and matter with its surroundings. In the case of the atmosphere, energy from the Sun, such as solar radiation, enters the system, providing warmth and driving weather patterns. Additionally, matter, such as gases, particles, and water vapor, can enter or leave the atmosphere through processes like evaporation, condensation, and atmospheric emissions. This continuous exchange of energy and matter with the surrounding environment characterizes the
atmosphere as an open system.