2. In a cross-section suppose you find older rock layers on top of younger layers, Explain a probable cause for this exception to the Principle of Superposition. [2]

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.

answer; ///segregation;

answer/// to address the needs of adults with mental illness and increase their ability to function;