PRACTICE: SUPPLY - DEMAND AND MARKET BALANCE You use the supply and demand graph to explain the following statements: 1) When the drought lasts in the North, the price of Thai Nguyen tea nationwide increases. 2) When the war broke out in the Middle East, gasoline prices increased while motorcycle prices decreased. 3) Cold weather reduces fishing output and fewer marketers. This causes a decrease in fishing output; prices can increase, decrease, or be unchanged. 4) Cigarette prices increase, causing cigar consumption to increase (knowing that cigarettes and cigars are two interchangeable goods).