Are the Niagara Falls formed by costructive or destructive forces/?
Niagara Falls was formed by glacial melt and debris flow that began to erode the dolomite and shale cliffs of the falls until they formed tall, steep edges. The edge of the falls is continuing to recede due to constant erosion even today. So, I would say destructive forces.
Destructive- the water carving out earth to make a fall
