The geography of Pennsylvania features a diverse landscape that includes mountains, valleys, and rivers. The Appalachian Mountains run through the central part of the state, while the Allegheny Plateau lies to the west. The state is also home to several major rivers, including the Susquehanna River and the Delaware River, which play a crucial role in its ecology and economy. Pennsylvania has a varied climate, with cold winters and warm summers. The state is divided into several regions, such as the Piedmont, Appalachian, and Lake Erie regions, each with its own unique geographical features and natural resources. This diversity contributes to the state's rich agricultural and industrial activities.