Acidification of Oceans major threat to world's reefs

What chemical is formed when excess carbon dioxide is absorbed by ocean waters?

• Nitric acid

• Hydrochloric acid

• Carbonic acid

• Sulfuric acid

How has the pH level of ocean surface waters changed from preindustrial times?

• Remained constant at 8.2

• Decreased from 8.2 to 8.1

• Increased from 8.1 to 8.2

• Increased from 7.8 to 8.1

What is the projected pH level of ocean waters by the end of the century?

• 8.2

• 7.8

• 8.1

• 7.5

Which marine organisms are affected by ocean acidification, leading to coral bleaching?

• Corals

• Sea turtles

• Fish

• Dolphins

What percentage of reefs in the Coral Triangle are currently threatened by ocean acidification?

• 65%

• 50%

• 85%

• 95%