What type of evidence does cosmic background radiation provide about the origins of the universe? A. It supports predictions of the composition of the early universe.
B. It pinpoints the size of the original universe.
C. It verifies that the early universe was once extremely hot.
D. It proves that the universe is expanding.

answer: wheres the options

explanation:

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.