4.What would happen if the sand dunes in an area were destroyed

In the short-term, these artificial sand hills will be destroyed by the elements. Because sand dunes protect inland areas from swells, tides, and winds, they must be protected and defended like national treasures. The ocean and the wind can have an unpredictable, destructive force on coastal regions.

Explanation:

the pic attached shows the stages of mitosis. hope it !

i think that d. wind is the answer.   i missed the question when i answered a. currents.