Butter and cheese are more valuable than fluid milk. This is ...

[RODY.ELKHALIL]

Butter and cheese are more valuable than fluid milk. This is explained by the concept of ________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

Many domesticated animals eat grass, foliage and other plant materials that humans cannot digest; however, some ________ are fed to livestock rather than being grown for human consumption.
 
  Fill in the blank(s) with the appropriate word(s).

[sarah_brady415]

Answer to Question 1

Answer: value added by manufacturing

Answer to Question 2

Answer: feed grains