Ground-source heat pumps use the difference in temperature ...

[big1devin]

Ground-source heat pumps use the difference in temperature between the air and soil to warm and cool buildings.
 
  The upper 10 ft of the Earth is always at a constant temperature of ________, which is ideal for warming buildings in the winter and cooling them in summer.
  A) 50-60F B) 100-20F C) 70-80F D) 225-60F E) over 360F

Question 2

Evaluate how the historical presence of minorities in Japan reflects attitudes toward immigration.
 
  What will be an ideal response?

[ecox1012]

Answer to Question 1

A

Answer to Question 2

Answers should explain treatment of groups such as the Ainu and burakumin and how cultural homogeneity shapes public opinion.