Over the last century, america's population has become elderly and young since the founding.

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.

What are three voluntary behaviors that is not control by results?

Where does the federal government work