Coral reefs are the most diverse of all marine ecosystems. They teem with life, with perhaps one quarter of all ocean species depending on reefs for food and shelter. This is a remarkable statistic when you consider that reefs cover just a tiny fraction (less than one percent) of the earthâs surface and less than two percent of the ocean bottom.
bumper - a mechanical device consisting of bars at either end of a vehicle to absorb shock and prevent serious damage. bumper guard - vertical bars attached to a bumper to prevent locking bumpers with another vehicle.
The height of crib bumpers can vary, but is generally about 8 inches. Crib bumpers became popular when the slats in cribs were far enough apart for a baby's head to become trapped between them. All cribs sold now in North America are require to have slats close enough together so that a baby's head won't fit through.