Sand dunes are formed by the wind transporting and depositing sand, and aeolian erosion of sand in the desert is partially responsible for the formation of sand dunes. Given these facts, what are factors in the creation of formations in the desert among the following options:
- scattered light
 - the pyramids
 - global warming
 - Physical weathering
 - salinity
 - tombs
 - Sahara
 - wind and erosion


 

        wind and erosion 