ANSWERS

1. Mount Kosciuszko

It was named in 1840 by the Polish explorer Paweł Strzelecki after Tadeusz Kościuszko, who fought for both Polish and American independence.

2. The Murray

3. Western Australia

4. Darwin; Charles Darwin

5. Melbourne

6. Walter Burley Griffin

7. Bass Strait

8. Victoria

Despite the name, there were never twelve stacks. Only seven or eight remain today.

9. Sydney

10. K'gari

11. "No trees" (from Latin "nullus arbor")

12. Lake Eyre (Kati Thanda-Lake Eyre)

13. Sydney and Perth

14. The Afghan cameleers who helped open up the outback

15. The red kangaroo

16. The kingfisher family

17. The saltwater crocodile

18. Sugar cane

The toads did little to control the beetles and have since spread across much of northern Australia, poisoning native predators.

19. The Rabbit-Proof Fence

20. 27 million