Answer:
C.They are made mostly of limestone.
Explanation:
Valley regions are mostly made up of limestone. the valleys of Ridge and Valley region are made up of sedimentary rock such as Limestone, dolomite, and shale. These limestone are extracted from these valley and use in the production of gypsum and other industrial products. Valleys are present at various height above sea level.
The answer is recharged by precipitation
Erosion is the process by which sediments are transported through wind, water, or ice.
Answer:
Yep, B, C, and D are right. A mesa is a flat hill, a plateau, and a mountain.
Explanation: