What do you think is a clean fuel?

Question

What do you think is a clean fuel?

Answer 1

Waste Vegetable Oil.

Answer 2

Ethanol is a clean fuel.  Cars running on ethanol, which is distilled from agricultural crops and biomass are governed by the same laws of physics as those using petrol in that both fuels emit CO2 as a consequence of combustion, however the crucial difference is that burning ethanol recycles CO2 because it has already been removed from the atmosphere by photosynthesis during the natural growth of agricultural crops, such as corn plants. A corn plant removes CO2 from the atmosphere and uses it to grow and produce cornstarch. The plant is harvested and the cornstarch is fermented into ethanol. The ethanol is burned and the cycle repeats. NO NEW NET CARBON is added to the atmosphere when you use ethanol, unlike gasoline which spews tons of carbon into the atmosphere which has been trapped beneath the earth's surface for millions of years in the form of crude oil. You can burn all the ethanol you want and you are not contributing one iota to global warming. You are simply recycling carbon. And creating demand for ethanol by using it in your car stimulates farmers to plant more corn to meet the demand. More corn means more CO2 is removed from the atmosphere because corn, like all plants, takes in CO2 and gives off oxygen via photosynthesis. So not only are you not adding any new carbon to the air when you use ethanol, you are stimulating the planting of more corn plants which naturally fight global warming via photosynthesis.

Answer 3

LPG  gas- the only residue is water vapour

Solar panels -no emmissions

Our own muscle power

windmills

water turbimes

wind turbines

Answer 4

My sailboat makes no exhaust.

Answer 5

All energy on Earth came from the sun. So I would have to say SOLAR.

Answer 6

a clean fuel is a fuel that has no harmful by products like gas emissions. i can say alternative fuels could be one