Final answer:
An occluded front occurs when a cold front overtakes a warm front, causing changes in weather conditions due to differences in air masses. The interaction between warm and cold air masses at fronts leads to cloud formation, storms, and precipitation.
Explanation:
An occluded front forms when a cold front catches up with a warm front, trapping warm air between two cold air masses. The cold air mass bulldozes the warm air mass, causing cloudy weather and precipitation along the front. The differences in temperature and pressure at fronts trigger changes in weather patterns, such as the formation of clouds, storms, and precipitation.
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