Levees most commonly form in association with:
a. soil creep and solifluction.
b. debris flows and mudflows.
c. rockfalls and unloading.
d. slumps and landslides.
e. rockslides and rockfalls.
Question 2
The primary factor responsible for mass wasting is:
a. water.
b. wind.
c. gravity.
d. ice.
e. waves.