What are the downsides of protecting beaches with engineering solutions?

Since erosion is unavoidable, the problem becomes discovering ways to prevent it. Present beach erosion prevention methods include sand dunes, vegetation, seawalls, sandbags, and sand fences. Based on the research conducted, it is evident that new ways to prevent erosion must be obtained.

I’m gonna guess without the picture to influence people to join the army

For the sat there is a reading test, math test, and a writing and language test. the act has social studies and science tests.