Question

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tremendous amounts of water flow steadily over niagara falls, which straddles the border of new york and the canadian province of ontario. the water moves at speeds ranging from 2 to 3 feet per second. over time, what will most likely happen to the rock wall behind the falls?

Explanation:

Water flowing over the rock wall exerts a force. Over time, this force will cause erosion. Erosion is the process by which natural forces like water wear away rocks. The continuous flow of water (even at the given speeds) will gradually break down and carry away parts of the rock wall.

Answer:

The rock wall will erode (wear away) over time.