1 Then on the XML document you are writing to display in the browser window, you put up a declaration like so: 2  The SYSTEM command denotes that the DTD can be found on the system running the XML document. 3  Now you are prepared to add the command to the XML document, like so: 4  Again, this is a very simplistic offering.
Quick Answer. Biomass fuel is made from organic materials such as scrap lumber and forest debris (that would otherwise fill up landfills) in order to create a renewable and sustainable source of energy. It is used to generate electricity and heat, among other sources of power. It is a carbon neutral alternative to other fuels.
Like trees, animals, and garbage: The total mass of living matter within a given unit of e â¦ nvironmental area.Plant material, vegetation, or agricultural waste used as a fuel or energy source. Biomass is typically used as a renewable energy source.