Examlex
Which of the following is nonpolar?
Marine Terraces
Flat, bench-like surfaces parallel to the shoreline that are formed by marine erosion and changes in sea level.
Wave-cut Notches
Erosional features formed at the base of cliffs by the action of ocean waves.
Coral Reefs
diverse underwater ecosystems held together by calcium carbonate structures secreted by corals.
Seawall
A man-made structure built along coasts to prevent erosion and flooding from the sea, often made of concrete, rocks, or other durable materials.
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