Search Results for: Vegetable by-products in form of pellets
of living organisms. they include wood, vegetable oils , animal fats , and animal manure. by contrast, fossil fuels , such as coal and petroleum , are derived from long-dead biological materials that have been transformed by geological processes. in principle, biofuels can be obtained from any biological
to cut exports, and non-opec nations experienced a very large decrease in oil supply. this "energy crisis" resulted in severe shortages, and a sharp increase in the prices of oil-based products, notably gasoline . there was also increased interest from governments and academics in energy issues and biofuels...
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