ABSTRACT
Biomass could be one of those renewable sources for energy, but it brings its own dilemmas; if biomass combustion is known from the early stages of humanity, still providing one tenth of primary energy supplies, it is too often at the cost of non-sustainable deforestation practices; if biofuels can be manufactured from sugars, starch, vegetable oils, they could readily enter in direct competition with food markets if they develop without all the necessary cautions.
