When Flip is asked to describe himself, he says, "I am outgoing and polite." Flip is most likely from

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.

not only is it colder, it also becomes darker, less salty, and more dense.

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