Why is beach nourishment considered mostly a short-term strategy for fighting beach erosion?(1 point)

Responses

It is expensive.
It is expensive.
It requires heavy machinery.
It requires heavy machinery.
It takes a long time to find the materials.
It takes a long time to find the materials.
It must be repeated every 5 to 7 years.

It must be repeated every 5 to 7 years.