Coral Reef Ecosystems - (Reading > Information)

Decide which paragraph, A to D, has the information given in each statement below. Select E if the information is not given in any of the paragraphs.

1...... - Coral reefs are built by microscopic organisms. 2...... - There are different structural classifications of coral reefs. 3...... - Coral reefs have potential applications in medical research. 4...... - Rising sea temperatures pose a significant threat to coral reefs. 5...... - Coral reefs can be found in all of the world's oceans. 6...... - The Great Barrier Reef is the most extensive coral reef system. 7...... - Coral reefs have a mutually beneficial relationship with certain algae. 8...... - Coral reefs provide coastal protection against natural disasters. 9...... - Some fishing practices can harm coral reef ecosystems.