This Clef is for higher pitched instruments such as the Flute, Oboe, Clarinet, Saxophone, Trumpet, French Horn, and Bell Kit.

Treble Clef

Explanation:

I can't really give an explanation I just know what it looks like :)

true because it is true

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !