Is html5 compatible with older browsers?

Related questions

1. Does html5 support offline storage?
2. How do you know which HTML version I am using?
3. Is doctype html important?
4. How do I know html5?
5. What is doctype XML?
6. Where is my website HTML?
7. What is doctype and what happens if doctype is not declared in a document?
8. What DTD means?
9. What is doctype declaration in html5?
10. Is HTML 5 case sensitive?

Tags

1. #which
2. #where
3. #elements
4. #basic
5. #sadly
6. #features
7. #canvas
8. #video
9. #html5
10. #answer
11. #semantic
12. #browsers
13. #support
14. #audio
15. #backward
16. #compatible