Scientists say they re not certain what causes them Have proposed several theories. For example, Scientists say some scientists say that"microblrste of wind created the circles. A microburst is a downward rush the same downward rush of air that sometimes causes an airplane to crash. Other of cool air scientists say that forces within the earth cause the circles to appear. But circles often appear in forms. It is hard to believe that any natural force could create those forms. Moreover, recently farmers have discovered not only circles but also other shapes such as triangles in their fields Could any natural forces created a perfect triangle in a field of grain?
Scientists say they re not certain what causes them Have proposed several theories.