Lesson 1.2: modeling the water and carbon cycles

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.

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

i believe the answer is snake.