Complex sentence: The rolling hills, and some steep hillsides are caused by its location: the township covers the slopes leading down to the Ohio River floodplain, and its landscape is cut by a number of ravines caused by streams that make the descent.
Split into simpler sentences: The rolling hills, and some steep hillsides are caused by its location. The township covers the slopes leading down to the Ohio River floodplain, and is cut by a number of ravines cause by streams that make the descent.