As the subsidence continues, the fringing reef becomes a barrier reef, and ultimately an atoll reef. 1  Darwinâs theory starts with a volcanic island which becomes extinct. 2  As the island and ocean floor subside, coral growth builds a fringing reef, often including a shallow lagoon between the land and the main reef.
wikiHow to Bump a Lock. âBumpingâ is a lock-picking technique that refers to the repeated striking motion used to dislodge the pins inside a lock. Doing this requires a specially cut key, known as a bump key, that with the right application can be used to force open 90% of cylindrical locks.
Bump stocks are simple pieces of equipment that replace the stock of a rifle and add a small support step in front of the trigger. The shooter rests his finger on this step and pulls forward on the barrel or forward grip to press the trigger against his finger.