World Geo

2. A caldera is a large depression formed when a volcano erupts and collapses.
3. the variety of life in the world or in a particular habitat or ecosystem.
4. a person's identity or a person's sense of belonging to one state or to one nation.
8. a hard stony substance secreted by certain marine coelenterates as an external skeleton, typically forming large reefs in warm seas.
9. any remote or sparsely populated region.shatterbelt
10. a member of the indigenous people of New Zealand.
11. relating to the indigenous peoples of Australia or their languages.
12. whiten by exposure to sunlight or by a chemical process.

1. a site of remarkable variety and beauty on the north-east coast of Australia.
5. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
6. a small freshwater lake near a larger lake or river.
7. a curved flat piece of wood that can be thrown so that it will return to the thrower, traditionally used by Australian Aboriginal people as a hunting weapon.
11. a ring-shaped reef, island, or chain of islands formed of coral.
12. a neutral area serving to separate hostile forces or nations.