They don't, they are made by growing plants (food crops) and using the produce to make oils which are turned into bio fuels. This may sound neat but it means that people elsewhaer in the world go hungry because that food is no longer available for them to eat.....bio fuels are a red herring.
Biofuels are biomass( fuels) that generate energy from wood burning. They contribute to sustainability by producing steam for both heating and electricity.
Bio fuels are those fuels that are easier on the environment than petroleum-based fuels. Some examples are bio diesel and methane.
Bio fuel but bio fuel is cleaner to use
This is an example of sustainable energy practices that aim to reduce reliance on finite resources like fossil fuels in favor of renewable alternatives. By using biofuels, we can help decrease greenhouse gas emissions and combat climate change while promoting a more environmentally friendly energy source.
We dont have to use Fossil Fuels
some of the low cost fuels are bio ethanol,bio methanol,cellulose bio mass etc.
Bio fuels are made from natural oils. These oils include, palm, soybean, and algae. Wood can also be made into a liquid bio fuel.
biofuels make energy from living things or their waste products
bio fuel is produced by animal wastes
from plants
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Yes Bio-fuels are renewable source of energy. It is true that every mole of bio-fuel will yield loss less energy than burning regular fuel but important thing is bio-fuel don't produce harmful gases when burnt. By improving technical know how we can make machinery that will run efficiently on bio-fuels.