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;
Where does biomass come from. It was only recently that biomass energy gained recognition to its full entirety. With inflation reaching sky high, and diminishing resources, human beings had to find a way out of the mess they created. And thus, biomass came in the limelight!he most common type of biomass is wood; it has been used since the ancient times and still remains very effective in many parts of the world. Dry leaves are also used as biomass for cooking and heating purposes. So much so, even the branches that fall of the tree are a source of energy.