Coral Reefs Quiz

What percentage of people worldwide rely on fish from coral reefs as their major source of protein?

• 50%

• 85%

• 70%

• 95%

How much does tourism from coral reefs add to the United States economy each year?

• $100 million

• $200 million

• $364 million

• $500 million

What percentage of marine life is found in coral reefs?

• 10%

• 15%

• 20%

• 25%

What is one of the benefits of coral reefs in medicine?

• They provide a source of protein.

• They help in treating cancer.

• They protect shorelines.

• They absorb carbon dioxide.

What do coral reefs absorb from ocean water to form their skeletons?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What is one of the ways coral reefs support local economies?

• By providing fresh water

• By providing jobs through tourism

• By producing oil

• By generating electricity

What is the main role of coral reefs in controlling the atmosphere?

• Absorbing oxygen

• Absorbing carbon dioxide

• Releasing nitrogen

• Releasing hydrogen