JDKDNSNS ID WISH FOR THIS PANDEMIC TO BE OVER AND THENNN THE OUTCOME WOULD BE MILLIONS OF LIVES SAVED AND BACK TO LIVING A NORMAL LIKE
<span> They are formed over many years when windblown </span>sand<span> is trapped by beach grass or other stationary objects. ... Without vegetation, wind and waves regularly change the form and location of </span>dunes<span>.</span>
The answer is probably b or c.