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 is a renewable energy source because its supplies are not limited. We can always grow trees and crops, and people will always produce garbage. 2. Using Biomass Energy. Usually we burn wood and use its energy for heating. Burning, though, is not the only way to convert biomass energy into a usable energy source. There are four ways: Burning. We can bum biomass in special plants to produce steam for making electricity, or we can burn it to provide heat for industries and homes. Bacterial Decay