Another example of biofuel is ethanol. Ethanol is alcohol made of plants, which can be added to traditional fuel to reduce CO2 emissions. But with ethanol, the problem of CO2 emissions still doesn’t get resolved. Firstly, depending on the source of ethanol, growing plants can already top up emissions.
Ethanol made from corn, for example, requires the use of tractors, which are still powered by fossils. In result, the amount of CO2 reduction coming from biofuels does not offset the additional CO2 released to cultivate the plants and CO2 released in factoring which with the help heat transform it in ethanol.