…showed first 75 words of 725 total…

…showed last 75 words of 725 total…range up to 100 kilometers long. A wind that periodically changes direction creates a reversing dune. Deserts range in temperature, soil content, precipitation and weather patterns. There are so many different types of deserts that it is hard to classify them easily. Not only are deserts limited to the Earth, but also they appear on mars and parts of other planets. There is some much information that has been found, yet so much more to discover.