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So you need to compare the advantages and disadvantages of both methods Biofuels Renewable source.Uses land that could be used to grow food. Less carbon emissions. When burned, they release as much carbon as they absorbed during growth, although some carbon dioxide will be released during production, eg by the tractor.Needs a lot of labour. Reduce our reliance on fossil fuels.Bioethanol cannot be used in cars without modifying the engine. Wind turbines Renewable sourceExpensive to build Cheap to run (no fuel costs)Visual pollution (spoils the view) No polluting gases producedNoise pollution (very noisy) Unreliable (depends on the strength of the wind)