In which type of unconformity is the eroded rock tilted or folded?
a. disconformity
b. nonconformities
c. angular unconformity
d. scarp unconformity

C

answer: blah

explanation:

bc blah

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.