Item WE019003: Whenever wind moves against the solid rock of a mountain, a little bit of the rock is worn away, even if you cannot see it.

Which of the following statements describes how long it takes for wind to wear away the solid rock of a mountain?

  1. Whenever wind moves against the solid rock of a mountain, a little bit of the rock is worn away, even if you cannot see it.
  2. Wind can wear away the solid rock of a mountain, but it would take about a hundred years or more to cause any change to the mountain, no matter how small.
  3. Wind can wear away the solid rock of a mountain, but it would take millions of years or more to cause any change to the mountain, no matter how small.
  4. Wind cannot wear away solid rock.