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:

what tree

explanation:

yes

explanation

they do and it slaps