Art is just like any other primary source as it shows what happened in that time era, what everything looked like, how people dressed and so on
Answer:
'Twinkle Twinkle Little Star' in the key of C major
Explanation:
(Picture)
Yes it's true, but that doesn't last very long. It creates a compression of the molecules during exactly half of each vibe, and during the other half, it leans the other way, and the molecules spread out in what's called a "rarefaction" a region of lower-than-normal pressure. This 'train' of compressions and rarefactions is what travels through the air, away from the vibrating object, and it's what some people often call a "sound wave".
Answer:
Natural minor
Explanation:
D Major would have an F# and C#, so it must be a minor -- d minor.
The relative major of d minor is F Major, so the key signature is b flat. There aren't any other accidentals, meaning it's not melodic or harmonic minor.