Economic questions

To answer properly, you need to write about one-third to half a page, font 12, single-spaced.                 

Macro Question 1: Explain how GDP is measured according to the expenditure and income approaches.  Make sure you read my lecture note.                 

Micro Question 2: Is it possible for many firms to sell exactly the same product, and still be in monopolistic competition? Be precise and explain in detail.