With reference to Thunderstorms, consider the following statements:
1. They are caused by intense convection on moist cold days.
2. It is a well-grown cumulonimbus cloud producing thunder and lightening .
Which of the above statement(s) is/are correct?
Thunderstorms are caused by intense convection on moist hot days.
A thunderstorm is a well-grown cumulonimbus cloud producing thunder and lightening.