What impact can the loss of natural barriers have on coastal regions?

The loss of natural barriers, such as beaches, dunes, and mangroves, significantly increases the risks of erosion and flooding in coastal regions. Natural barriers serve as protective buffers that absorb wave energy and reduce the impact of storms and high tides. When these barriers are lost due to human activities or natural events, the shoreline becomes more vulnerable to the forces of the sea.

Without these barriers, the coast experiences accelerated erosion as the waves can easily hit the land with greater force. This leads to the loss of land and infrastructure. Additionally, the absence of natural barriers means that water can surge further inland during storms, increasing the likelihood of flooding in coastal communities.

The other options do not accurately reflect the consequences of losing natural barriers. While tourism may seem beneficial, it generally depends on the presence of healthy coastal environments. Stable ecosystems are also negatively affected, as natural barriers are crucial for maintaining biodiversity and resilience against environmental stressors. Improved water clarity is not a direct result of losing natural barriers; in fact, coastal degradation often leads to increased sedimentation and pollution, which can harm water clarity.