Question

Q. Which of the following is/are not a major contribution of coral reefs?

Select the correct answer using the code given below:

• A. 1 only
• B. 1, 2 and 4 only
• C. 1 and 3 only
• D. All of the above

Answer 1

The correct option is A 1 only

Explanation:

• Statement 1 is incorrect. Petroleum is found in continental shelves, not on coral reefs.

All other statements are correct.

• Coral is the source of nitrogen and other essential nutrients for marine food chains. They assist in carbon and nitrogen-fixing. Coral reefs teems with diverse life. Thousands of species can be found living on one reef.
• Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also a source of food and new medicines.
• Over half a billion people depend on reefs for food, income, and protection. Reefs become large petroleum traps when their vertical dimension has been extended by upward growth with a rising sea level, relatively.