What do fog and cloud have in common? What is the difference between them?

Fog is formed when air saturated with water vapor comes into contact with the cooled surface of the Earth. A cloud is also fog, only at a considerable height above the Earth.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.