What do some scientists think will happen in 50,000 years?
A) Niagara Falls will turn back into an ice sheet.
B) Niagara Falls will be a river without any falls.
C) Niagara Falls will change to saltwater.
D) Niagara Falls will be the tallest waterfall.
What do some scientists think will happen in 50,000 years?
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The correct answer is B) Niagara Falls will be a river without any falls.
Explanation: Some scientists believe that over the course of thousands of years, erosion will wear away the rock face that creates Niagara Falls, leading to a situation where it will no longer have distinct waterfalls, but instead, just be a river flowing smoothly. This geological process takes a very long time, but it’s a common prediction based on current erosion rates.