Are biofuels any better than fossil fuels?

100% Accepted from 1 experts

Clean technology 2cb880ed154ca8ec33aa84f10c3ddc8282b2161634dc63ebb1735db8a8e4c1a7 Renewable Energy Chemistry 596f8d7248985c408c61cb0a5cf48ac137d867f9b13b1962c0da7e8c144a2ef0 Organic Chemistry Climatology d4c29934d0ba6e9ed3d29a8e01c72bdc30af9ce9aaa9473994d0ad0956319702 Climatology Climatology d4c29934d0ba6e9ed3d29a8e01c72bdc30af9ce9aaa9473994d0ad0956319702 Atmospheric Science Chemistry 596f8d7248985c408c61cb0a5cf48ac137d867f9b13b1962c0da7e8c144a2ef0 Chemistry

There seems to be a lot of hype around the production of biofuels (bioethanol and biodiesel primarily) as a good, 'green' alternative to fossil fuels for generating energy and powering cars etc. However, aren't they also hydrocarbons? And therefore wouldn't burning them also produce CO2? What makes them so 'green' in this regard?

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