Otis is making a poster about how to preserve sand along the beach. Which of the following suggestions should Otis include on his poster?

Planting grass helps preserve beach sand because the roots hold the sand in place and reduce erosion from wind and water. Otis should include “Plant more grass near the coastline.” Seawalls and sandbags are barriers that can disrupt the natural movement of sand, while a fence alone does not hold the sand together as effectively as plant roots.

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