Is there a minimum for Google ads?

Related questions

1. Does Google AdWords really work?
2. What is ad variation?
3. How much is Google pay per click?
4. How long does it take for Google ads to live?
5. What are conversions in Google AdWords?
6. Is Google AdWords the same as Google ads?
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Tags

1. #lowest
2. #instance
3. #account
4. #google
5. #score
6. #click
7. #amount
8. #usually
9. #notes
10. #minimum
11. #assigned
12. #order
13. #quality
14. #based
15. #keyword