Consider the following statements: I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth's surface. II. Heat absorbed and trapped by the atmosphere maintains our planet's average temperature. III. Atmosphere's gases, like carbon dioxide, are particularly good at absorbing and trapping radiation. Which of the statements given above are correct?

All three statements are correct. Without the greenhouse effect provided by the atmosphere, Earth's average surface temperature would be about -18°C, well below freezing. The atmosphere absorbs and re-emits long-wave radiation, maintaining Earth's average temperature at around 15°C. Greenhouse gases like carbon dioxide, water vapour, and methane are particularly effective at absorbing and trapping infrared radiation. This is the basic explanation of the natural greenhouse effect.