Open and closed-loop effects are also called direct and indirect effects, respectively. The direct effect of the forestry and hunting sector, for example, focuses on the sector's impact on final demand, i.e., the goods and services supplied by the sector and directly consumed as final products, such as the direct gathering of firewood by households for domestic energy supply. The indirect effect of the forestry and hunting sector includes output that helps support the production activities of other sectors in the economy.