Blowing in the wind

This task is about sand dunes and erosion.
sand-dunes.jpg
 
On Ninety-Mile Beach sand is blown from the dune area across to fertile farm land.

Suggest two acceptable actions that could be taken to slow down or stop this process.
For each example state what you would do and what the expected result would be.  

Question 1Change answer

a)
Action 1:
 
 
Expected result:
 

Question 1Change answer

b)
Action 2:
 
 
Expected result: