Discussion: Scarcity and Opportunity Costs

PDF of disscussion1 is the question. (100 word minimum )

PDF of chapter 2 and chapter2.2 is the knowledge to help to finish DB.

There is the link for the video of chapter 2 pdf.

 https://www.youtube.com/watch?time_continue=2&v=w_PSNoUWibg&feature=emb_logo 

 https://www.youtube.com/watch?time_continue=9&v=lpSz2x0c1rU&feature=emb_logo