2. the action of abrasion can best be described as

a. windblown sand cutting and polishing exposed rock surfaces
b. coarse sand particles rolling along the desert surface
c. sand being blown high into the air to cut and carve rock formations
d. the wind creating desert pavement

3. sand dunes that form scalloped rows of sand at right angles to the wind are called

a. star dunes
b. parabolic dunes
c. transverse dunes
d. barchanoid dunes