What are biofuels? 1. The use of biological material (biomass) as a fuel or lighting material is not new; the earliest evidence for humans using wood for fires is at Gesher Benot Ya'aqov in Israel. 790,000 years ago. However, concern over the impact that the burning of fossil fuels is potentially having on the climate has resulted in renewed interest in biofuels. The difference between fossil fuels and biofuels is that fossil fuels were produced millions of years ago when plants and other organisms died, became buried and were subjected to high temperatures and pressures forming coal, oil or natural gas. Biofuels, on the other hand, are produced from biological material that has been living recently. There are a number of ways in which biofuels can be produced. 2. Some biofuels can be produced from waste material, such as recycled plant oils, whilst others can be produced from plants specially grown for the purpose. Both liquid and gaseous forms of biofuels can be produced from crops that either have a high sugar content, such as sugar cane or sugar beet, or contain starch that can be converted into sugars, such as maize. Plants containing high levels of plant oils, such as oil palm or soybean, can also be used. Wood and its by-products can be converted into a variety of biofuels. co, 1. The main ways in which humans use biofuels 2. Fuels can give energy to humans 3. The main difference between fossils and biofuels 4. The main ways biofuels can be produced Task. Mark the sentences True or False. Task. Which paragraph contains the following information? Write Paragraph 1 or 2 next to the sentences below. Ha 5. Biofuels are possible to produce by converting recycled plant materials. 6. It is not possible to convert trees into a type of biofuels.​