Water and time can work together to create what?
a wave canyon matter heat soils mercury iron desert
A B C D E F G H
Erosion is the work of wind, water, and time.
Water and time can eventually create a canyon. 
Water and time can work together to create what? (A) a wave (B) canyon (C) matter (D) heat (E) soils (F) mercury (G) iron (H) desert