How long would a zombie apocalypse?

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Tags

1. #earth
2. #unchecked
3. #tongue
4. #zombies
5. #student
6. #zombie
7. #would
8. #within
9. #humans
10. #hordes
11. #population
12. #article
13. #survivors
14. #reveals
15. #journal
16. #mathematical
17. #cheek
18. #humanity
19. #finds
20. #reviewed
21. #could
22. #model