The warm air mass rises when caught between two cold fronts? What do you think is the reason that stationary fronts bring many days of the same weather? ... The sound caused by lightning when the air expands due to the air heating up from the lightning.
<em>Stationary front Forms when warm and cold air meet and neither air mass has the force to move the other. They remain stationary, or “standing still.” Where the warm and cold air meet, clouds and fog form, and it may rain or snow. Can bring many days of clouds and precipi- tation.</em>
Without the Industrial Revolution we wouldn't have the option to go to a shop with everything you will need in it (we call this a supermarket). Nothing was mass produced until the introduction of one of the major parts of the Industrial Revolution: Factories