A close-fitting mosaic of gravel-sized stones that overlies a deposit of mostly finer-grained sediments in a desert is called _____.
a. desert pavement
b. a mesa
c. a ventifact
d. arroyo
e. an erg
Question 2
Playas are _____.
a. ancient Pleistocene shorelines representing a past, more humid climate
b. eolian depositional landforms
c. flat because of resistant caprocks
d. dry stream channels that occasionally see flowing water
e. flat because of the movement of water and sediment by wind