The sequence of events that can lead to magma becoming soil is C. crystallization followed by exposure and weathering. Under these circumstances it may happen that magma actually turns to soil - it cools off so much that it becomes the ground we walk upon.
Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them. As the rock dissolves, spaces and caverns develop underground.
Sinkholes are formed when the land surface above collapses or sinks into the cavities or when surface material is carried downward into the voids. Drought, along with resulting high groundwater withdrawals, can make conditions favorable for sinkholes to form.
Roaraion on it axis and revolution around the sun
Soil erosion is a recent problem in Tanzania even though the Masai have used their land for herding for so many years. This dramatic increase in soil erosion now even shows signs of an almost total destruction in the Tanzanian Maasai landscape.
The main trigger for soil erosion is the loss of vegetation cover which makes it easier for natural factors & man-made factors to cause even more damage.
I think the answer is C. alluvial fans are found at lower elevations
hope this helps ! :D
