Why did the T Rex go extinct?

Related questions

1. Can scientists make water?
2. Do we need oil?
3. How old is most crude oil?
4. Which oil is best for dark circles?
5. How do humans use oil in everyday life?
6. Will oil run out?
7. What causes oil prices to rise?
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9. Why is oil so important?
10. Does the US still import oil?

Tags

1. #paleontologists
2. #species
3. #extinction
4. #supply
5. #given
6. #changes
7. #place
8. #years
9. #geological
10. #interrupted
11. #believed
12. #cretaceous
13. #climate
14. #tertiary
15. #caused
16. #event
17. #other
18. #dinosaurs
19. #million