What causes gravity simple answer?

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Tags

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2. #simple
3. #moving
4. #important
5. #gravitational
6. #round
7. #between
8. #equilibrium
9. #earth
10. #there
11. #balances
12. #centrifugal
13. #answer
14. #because
15. #force
16. #which
17. #dynamic
18. #movement
19. #creates