Final answer:
Precipitation patterns in central and northeast parts of the United States are changing due to various climatic factors, with some areas projected to experience increased precipitation and intensity of precipitation events.
Step-by-step explanation:
In central and northeast parts of the United States, precipitation patterns are changing. These shifts are influenced by a variety of factors such as atmospheric water vapor content, evaporation rates, and wind patterns. In the northeast particularly, there are challenges with acid rain and the area's ability to neutralize it due to the dense population and industrial activities. Global trends suggest that some regions will see an increase in precipitation, whereas others will experience a decrease, reflecting changes in the Earth's climate system. Specifically, it is expected that there will be an increase in the intensity of precipitation events on average, especially in tropical and high-latitude regions.