What are three ways that the great barrier reef is important to australia?

The Great Barrier Reef, being the largest reef in the world holds many benificial factors including providing natural resources like food and drugs, it holds massive species diversity anongst a small area, and is a source of nitrogen for marine chains.
The reef is constantly being put in danger due to global warming and poor management- The Australian Government has already contributed 40 mil to the cause of keeping the reef in standardized conditions.

Ibelieve the answer is c. map projections.hope my answer has you : )