Decreasing pressure
the spacing of isobars is the correct answer
Decreasing Air Presser
When a cold FRONT catches up to a warm FRONT it is called an occluded front.
When a cold AIR MASS displaces a warmer AIR MASS it is a cold front.
Occluded front
The North America air masses is what causes cold waves. This is in the Central Eastern United States.
The only difference - is the direction of flow. A sea breeze blows from the sea onto the land. A land breeze flows in the opposite direction.
How does a region has a low pressure and a high pressure system moves in. What is the best prediction about the weather from this information?
The polar jet stream lies between the polar easterlies and trade winds