Difference between animal cells and plants cells​

I hope this picture helps!! :)

Explanation:

answer; /// i believe that the correct answer is; ///a combination of the birth and death

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.