Candice needs a more effective thesis statement for her paper. Which sentence should replace sentence 8 to serve as the thesis statement?
F There are other barrier reefs in the oceans of the world, but only the Great Barrier Reef is so well known.
G The Great Barrier Reef of Australia is a supreme example of the mysteries of the natural world because of its wide variety of plant and animal life.
H Some scientists believe the Great Barrier Reef first began to grow about 18 million years ago.
J A coral reef like the Great Barrier Reef can grow only in shallow, warm water because it needs light from the sun to survive.