In utah's arches national park we can see many interesting shapes like this one. many different things to shape this arch: earthquakes, rivers, freezing water, and wind. only one of these made the surface of the arch smooth and rounded. that was

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a