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Brief, basic information laid out in an easy-to-read format. May use informal language. (Includes most news articles)
Provides additional background information and further reading. Introduces some subject-specific language.
Lengthy, detailed information. Frequently uses technical/subject-specific language. (Includes most analytical articles)
Coral reef, ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of certain coelenterates, of which coral polyps are the most important. A coral reef may grow into a permanent coral island. Often called the “rainforests of the sea,” coral reefs are home to a spectacular variety of organisms. Encyclopedia Britannica (Source)