This document defines supply as the total amount of goods available to consumers over a long period of time. It lists several factors that affect supply, such as production costs, input prices, and government policies. It introduces the concepts of individual supply curves, market supply curves, and how supply can change through shifts in the supply curve due to changes in the determinants of supply. Specifically, it explains that an increase in supply results from factors like new technology and causes the supply curve to shift right, lowering the equilibrium price, while a decrease in supply shifts the curve left and raises the equilibrium price.