Describe the process that creates sand dunes. what is that process called?

Scientists refer to this system as sand erosion. The desert as we know it has no rich soil, as in refered to many correct movie franchises like "TinTin" the desert is covered in sand. Then the violent winds and sandstorms blow sand everywhere, eventually, the sand will start piling up creating a sand dune. :)

El nino is a weather phenomenon caused when warm water from the western pacific ocean flows eastward. part1baan average of 7.7 hurricanes and 3.6 major hurricanes compares to 5 hurricanes and 1.5 major hurricanes from 1995-2005

Answer volcanic outgassing;