The rainforest consists of several layers. Each layer has plants and animals which are adapted to the conditions found there. In the ground layer, soil is poor and any nutrients are quickly recycled. The next layer is made up of shrubs and plants which can tolerate low light levels. The lush undercanopy consists of smaller trees which compete for the light and space. Epiphytes are found in the undercanopy.
In additon. biofuels may be marketed as good, renewable, sustainable or next generation, partly for promotional purposes. So achieving a widely accepted definition of advanced and/or sustainable biofuels is a challenge. Often the term is applied to biofuels produced from lignocellulosic (LC) or cellulosic biomass.io-oil can be used as a heating fuel or can be further converted to advanced biofuels. Torrefaction (heating at 200-300 Â°C in the absence of oxygen, at atmopsheric pressure) converts biomass to bio-coal, which can be more easily used for power generation than untreated biomass.
From these perspective is possible to realize that biofuels use a high amount of fossil fuel energy in the agricultural and industrial conversion stages. When using Emergy Methodology the results showed that only 25% of the resources used to produce biofuel from soybean are renewable.onclusions. Emergy accounting method showed quantitatively that biofuels are not renewable energy. sources. When crop production and industrial conversion to fuel are supported by fossil. fuels in the form of chemicals, goods, and process energy, the fraction of fuel that is.