Course hero what’s the difference between a correlational study and an experimental study?

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

Alimitation on the president’s power to appoint ambassadors is that

Ben's town is holding an election for mayor next month, and he is trying to decide which of the two candidates for mayor will get his vote. ben thinks that his town's air quality has decreased in recent years. because of this belief, what should ben look for when deciding on a candidate?