Why is zealandia a continent?

Related questions

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Tags

1. #would
2. #islands
3. #zealandia
4. #largely
5. #these
6. #ocean
7. #beneath
8. #easily
9. #confirmed
10. #submerged
11. #continent
12. #visible
13. #australia
14. #hemisphere
15. #caledonia
16. #proposed
17. #smallest
18. #parts
19. #zealand
20. #southern