Morgan wants to incorporate some notes about coral reefs into his report. Which of the following notes would be most relevant to his report?
A.
The Great Barrier Reef in Australia is the largest coral reef in the world. It includes 600 types of corals, over 1,000 species of fish, and more than 30 species of whales and dolphins.
B.
Coral reefs are a popular tourist destination. Some of the coral reefs in the world include The Great Barrier Reef, the Florida Reef, the Mesoamerican Barrier Reef, and the New Caledonia Barrier Reef.
C.
Coral reefs are large ecosystems that are found underwater. Though they cover less than 1% of the Earth's surface and less than 2% of the ocean floor, they are home to a number of plant and animal species.
D.
It is difficult to give an exact number of the plants and animals that live in the ocean. Many of these life forms are found in coral reefs, which are the "rainforests" of the sea.