Check About This Mac. From the Apple ( ) menu in the corner of your screen, choose About This Mac. The version of your operating system appears beneath âmacOSâ or âOS Xâ in the window that opens. If you need to know the build, click the version. This example shows macOS High Sierra version 10.13, build 17A365:
Biomass is fuel that is developed from organic materials, a renewable and sustainable source of energy used to create electricity or other forms of power. Some examples of materials that make up biomass fuels are: 1  scrap lumber; 2  forest debris;
Biomass refers to any material that is organic in nature. In other words, if the material was once part of a living thing, it is biomass. Most biomass comes from trees. Usually forests are not cut down for biomass, but when the forest is cleaned out to prevent forest fires, that wood can be used for biomass.ther sources of biomass are food crops and the parts of those crops that are not eaten, such as fruit pits or stalks, grassy or woody plants, and any organic waste. Many of the crops that can be used for biomass can be grown on land that is not good for farming for some reason or another.