He creationist and evolutionist are in agreement on all of the following items except:
cell complexity
the role of certain organelles in cell chemistry
the ability of matter to be self organizing
the levels of organization of complex organisms

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.