Is the Niagara falls formed by constructive or destructive force?

Niagara falls is primarily formed by destructive forces, specifically erosion. Over thousands of years, water erosion has shaped the landscape, carving out the gorge and leading to the formation of the falls. While constructive forces like volcanic activity can create landforms, the dramatic features of Niagara Falls are largely the result of the powerful and continuous erosion caused by the flowing water of the Niagara River.