Answer:
O Both are inexpensive ways to fight erosion.
Step-by-step explanation:
Beach nourishment which is the artificial placement of sand on the shores of the beach in-order to maintain the amount of sand present as was obtainable in the foundation of the coast is one of the inexpensive ways to fight erosion.
Most times, the sands are taken from where they are in abundance and moved towards the shores of the beach where they are lacking. This similar to vegetation management which is the implementation of various strategies like tree pruning, tree growth and use of herbicides in-order to prevent erosion and establishment of inadequate compatible species environment.