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The sand dunes on a barrier island form a
long ridge. This protects the forests in the
center of the island from the harsh ocean winds.
This map shows
elevations on Bald Head Island.
Elevation is how high a place is above sea
level. The shoreline has an elevation of 0,
since it is right at sea level. Places that are
under water have negative elevations. Places
that are
above water have positive elevations.
Can you locate a ridge of sand dunes in the map? |
