Item WE048001: Water can gradually wear away the solid rock of mountains as much as thousands of feet over many millions of years.

Which of the following statements describes how water can change mountains?

  1. Water can gradually wear away the solid rock of mountains as much as thousands of feet over many millions of years.
  2. Water can wear away the solid rock of mountains no more than several feet over many millions of years.
  3. Water can wear away the solid rock of mountains no more than several inches over many millions of years.
  4. Water cannot wear away the solid rock of mountains, even over many millions of years.

Statistics for this item are available in the Original Project.