Question 9 • PBCSD_Grade_Forgiveness_2001310_Earth Space Science_S1_2019
Sand dunes store sand along the coast, helping replenish beaches and reduce erosion. They also act as barriers that absorb storm surges and waves before they reach inland areas. Aquifers store groundwater, while sinkholes and springs do not provide these coastal protections.
AI-written and checked against the verified answer.