What do you call the lines on a topographic map that indicate the elevation of the land forms?
topographic lines
A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion.
Salt water makes up 97 percent of the earth's waters as 3 percent is only fresh water.
it might be problem for us to provide the r ight amount of and can also cause more people to be homeless.
