Consider the following statements on 'Fog': 1. Fog is simply a cloud that forms close to the ground. 2. Radiation fog is associated with radiation cooling of the land at night. 3. Advection fog forms when moisture is blown over a cold surface and is chill
Fog is indeed a cloud that forms at ground level. Radiation fog occurs when land cools overnight, and advection fog forms when moist air passes over a cold surface, both processes resulting in fog formation.