Coral Reefs: Secret Cities of the Sea

How long ago did the oldest corals exist compared to dinosaurs?

• 450 million years ago, before dinosaurs

• 100 million years ago, during the age of dinosaurs

• 240 million years ago, alongside dinosaurs

• 7 million years ago, after dinosaurs

Which of the following species is NOT mentioned as part of the Great Barrier Reef's biodiversity?

• Penguin

• Mollusk

• Fish

• Coral

What medical conditions have coral extracts been used to develop treatments for?

• Diabetes and hypertension

• Alzheimer's and Parkinson's

• Asthma and arthritis

• Obesity and depression

How does the global value of coral reefs compare to the GDP of G8 countries?

• It is lower than all G8 countries

• It is equal to the GDP of Brazil

• It is higher than Japan, Germany, and the UK

• It is only higher than the US and China

What percentage of wave energy can coral reefs reduce, providing protection from threats like tsunamis?

• 100%

• 95%

• 75%

• 50%