Answer:Bar lines specifies the no of beats in a bar. If the number of beats between bar lines is 4 then 4 is the number of beats in a bar.
Explanation:
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Its vaudeville. Vaudeville is a diverse show with multiple acts such as singing, dancing, comedy,etc
conservation for art is "preserving, fixing, or just restoring old art or other things like artifacts etc." (found in an article on www.msaconservation.com) it's most likely controversial because if something's old and valuable, people want to keep it in it's original form. (just a guess) but that's how it is in the art world.
No, i don't want to. sorry