Suppose the Great Barrier Reef, located off the coast of Queensland, Australia, is the largest coral reef system in the world. It is home to a vast array of marine life, including over 1,500 species of fish and 400 species of coral. The reef is a popular destination for tourists and researchers alike, with activities such as snorkeling, diving, and scientific studies regularly taking place there.
Can we infer that the Great Barrier Reef is completely free of pollution? Yes, no, or maybe?