Why are there three types of minor scales?

Related questions

1. What mode is major scale?
2. How many scales are there?
3. What is G Phrygian?
4. What makes a scale dominant?
5. What is C Aeolian?
6. What is an Aeolian piano?
7. What are piano modes?
8. Are there modes for minor scales?
9. How many diatonic scales are there?
10. What is the difference between country and western music?

Tags

1. #three
2. #harmonic
3. #melodic
4. #scales
5. #tonic
6. #lessons
7. #about
8. #scale
9. #learned
10. #different
11. #types
12. #minor
13. #reminder
14. #natural
15. #major
16. #relative
17. #start
18. #changing