Who can change the backlog during an iteration?

Related questions

1. What is agile workflow?
2. What is a user story in Agile?
3. Why do we use Scrum?
4. Who owns the sprint backlog?
5. Who owns the product backlog?
6. What is the purpose of sprint burn down chart?
7. What does a scrum half do?
8. What's a sprint in Agile?
9. What is the major difference between product backlog and sprint backlog?
10. What is burn down and burn up chart?

Tags

1. #remaining
2. #during
3. #backlog
4. #sprint
5. #development
6. #removed
7. #updated
8. #performed
9. #completed
10. #change
11. #deemed
12. #unnecessary
13. #estimated
14. #elements