I believe the correct answer among the choices presented above is the last option. It is in the Sahara desert that most-likely there is physical water scarcity. This is because it is a desert and it is a characteristic of a desert to have very small or no amount of water. Also, the climate their is very hot.
B) Landslides
Hope this helped, If it did mark me brainliest:)
They both change the nucleus of the atom
