Question

In Utah’s Arches National Park we can see many interesting shapes like this one below. Many different things helped to shape this arch: earthquakes, rivers, freezing water, and wind. Which one of these made the surface of the arch smooth and rounded?

earthquakes
earthquakes

strong winds
strong winds

water freezing in the cracks
water freezing in the cracks

a river running through the rocks

Answer 1

[AI-generated answer — Bot GPT 3.5]

water freezing in the cracks