What is the main difference between xylem and phloem

This passage would suggest that sudan might have a a) democracy. b) dictatorship. c) command economy. d) communist government.

In your opinion which are the 3 most important statistics to improve to promote a better future in america and why?

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.