Why does atmospheric pressure exist?

Related questions

1. What air pressure can humans survive?
2. What atmospheric pressure can humans survive in?
3. How is ATM calculated?
4. What air pressure means?
5. What is a high atmospheric pressure?
6. Do bananas lower blood pressure?
7. What is the normal atmospheric pressure?
8. Can you feel barometric pressure?
9. What causes low air pressure?
10. What is normal atmospheric pressure in ATM?

Tags

1. #weight
2. #because
3. #reason
4. #every
5. #strong
6. #gravity
7. #pressing
8. #place
9. #simultaneously
10. #enough
11. #equal
12. #gases
13. #exits
14. #force
15. #column
16. #atmospheric
17. #notice
18. #pressure