the happier you are means you need less sleep to function, when your sad it requires more sleep to function

People that are sad actually sleep less because they just keep waking up in middle of sleep. This disrupts the sleep cycle. Happy people get the most sleep between the two.

Explanation:

i got an a+! !

based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.