Market shock & food security. Rice consumption accounts for 2/3rds of the total dietary energy that is supplied. October 2020, flash floods was triggered by tropical storm caused flooding severely in nation AA, destroyed thousands of hectares of rice as a result. 1. How can that be captured by a simple supply and demand model also capturing the influence of the weather shocks on the domestic rice market. And how can the economic effect of the shocks in terms of the quantity and price will change will be described? 2. As a result of Covid 19 nation AA experienced an economic downturn and a dramatic rise in unemployment.How will that affect the grapgh? 3. As a result of the weather shocks in nation AA. Can international trade help to ensure food security in nation AA ? 4. And as a result of the weather shock, nation AA ban rice export, what will be the global effect of these ban of rice out of nation AA?