1. Following table shows US treasuries with different maturities and the corresponding yields as of December 9, 2020.

U.S. Treasuries	YIELD (%)
30-Year Bond	1.688
10-Year Note	0.939
7-Year Note	0.677
5-Year Note	0.404
3-Year Note	0.216
2-Year Note	0.157
1-Year Bill	0.104
6-Month Bill	0.095
3-Month Bill	0.075
1-Month Bill	0.072

What kind of relationship do you observe between the maturities and yield? Explain the relationship based on expectations theory and liquidity premium theory. (5 points)