Which statement best explains how arteries and veins help maintain homeostasis? The carbon dioxide exhaled by the lungs is carried by the veins and arteries to the different parts of the body.
Arteries carry oxygen-rich blood to the different parts of the body, and veins carry carbon dioxide-rich blood to the heart.
Veins carry oxygen-rich blood to the different parts of the body, and arteries carry carbon dioxide-rich blood to the heart.
The oxygen inhaled during respiration is carried around the body through blood by veins and arteries to maintain homeostasis.

the answer would be (b). the stave church in borgund, norway is an example of norse architecture.

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 !