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.
Dimensions of a Car Bumper. In terms of height, the bumper of a passenger car must not go beyond the range of 41 to 51 centimeters or 16 to 20 inches. This standard rule applies to all cars although the actual sizes of their bumpers vary. The use of bumpers in a car is a legal requirement in most jurisdictions.