True im pretty sure i was told this once before
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.
Answer:
The United States and Mexico depend on each other more than ever for our economic well-being and competitiveness. We will sink or swim together in the global economy.
Explanation:
Usually a hill or volcano I need the abcd things.
