However, they did find that while the pattern is the same, they function in different ways in each location. The area in Australia where the fairy circles are abundant doesn’t get regular rainfall. So as trees grow, their roots grow longer to collect the water. As that happens, the roots loosen the soil around them, making plants closer to the large tree easier to grow and plants farther away much less easier to grow. As a result, these random areas of dry land form. In Namibia, which also doesn’t get a lot of rainfall, the circles act as troughs that then store and provide water to the thirsty plants and trees that surround it.