I think most of it is just cultural conditioning, we play major key songs when we're happy and minor key songs when we're sad (though this is changing in modern music). Another part of it could be that minor chords have their midtones clash a bit more with there tonic notes than major chords, it sounds slightly "wrong" to our ears and takes away from the happy effect.
Answer:
Memory for stimulus sequences distinguishes humans from other animals. Summary: Humans possess many cognitive abilities not seen in other animals, such as a full-blown language capacity as well as reasoning and planning abilities.
Explanation:
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Answer:
the barlines are the big chunks in the end of the lines. the time signatures are the numbers in the beginning and the tie is the line under the notes