Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: A 2011 Science paper produced by the HiRISE project explained how, on Mars, these objects can become destabilized by the sublimation of dry ice. Like yardangs and loess, they are produced via Aeolian processes, which include saltation, surface creep, and suspension. Types of these geologic objects include barkhans and draa, and both (*) "fossilized" ones and those that "move" are found in ergs. "Reversing" ones are formed where seasonal winds blow in different directions. For 10 points, name these large accumulations of sand.
Output:
Social Science