It is either a Ï bond or a lone pair on an atom of relatively high electron density in a molecule or ion, or a bond that must break during a reaction. An electron sink is an atom on a molecule or ion that can accept a new bond or lone pair of electrons.
Threats to the Reef. The Great Barrier Reef is one of the worldâs best managed reefs but, like other coral reefs, it faces threats such as: 1  Climate change. 2  Extreme weather.3  Declining water quality. 4  Coastal development. 5  Illegal fishing. 6  Crown-of-thorns starfish outbreaks. 7  Marine Debris.hreats to the Reef. The Great Barrier Reef is one of the worldâs best managed reefs but, like other coral reefs, it faces threats such as: 1  Climate change. 2  Extreme weather. 3  Declining water quality. 4  Coastal development. 5  Illegal fishing. 6  Crown-of-thorns starfish outbreaks.
Continue reading the main story. Continue reading the main story. SYDNEY, Australia â In a bid to keep the Great Barrier Reef from being reclassified by the United Nations as âin danger,â the Australian government on Monday unveiled a 35-year plan to manage risks to the reef, one of the natural wonders of the world.But conservationists warned that the plan did not go far enough.ontinue reading the main story. Continue reading the main story. SYDNEY, Australia â In a bid to keep the Great Barrier Reef from being reclassified by the United Nations as âin danger,â the Australian government on Monday unveiled a 35-year plan to manage risks to the reef, one of the natural wonders of the world.