Answer: Because sand dunes protect inland areas from swells, tides, and winds, they must be protected and defended like national treasures. A strong and healthy beach dune is a powerful antidote against coastal erosion. The ocean and the wind can have an unpredictable, destructive force on coastal regions.
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
No. There are to many people in the world with different political views for everyone to have one common mind set
