What are the different variations of the C scale modes and how are they used in music theory?

The different variations of the C scale modes are Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian. Each mode has a unique sound and character due to its specific arrangement of intervals. In Music Theory, these modes are used to create different moods, harmonies, and melodies in compositions. They provide a framework for musicians to explore different tonalities and expressiveness in their music.