Question

_____plants can be used to obtain cheap eco-friendly fuel
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Answer 1

Answer:

Natural gas [CNG]

Explanation:

CNG offers better ignition reduced emissions and thus becomes environment friendly. Compressed natural gas is the cleanest burning fuel operating today. This means less vehicle maintenance and longer engine life. CNG vehicles produce the fewest emissions of any motor fuel

Answer 2

hlo mate here is ur ans.......

Scientists are now taking materials that have traditionally been discarded, from grass clippings and chips to used vegetable oil, and creating clean, green fuels. Other researchers are looking at ways to turn energy from the sun into horsepower, giving a whole new meaning to the term sunroof.

Biofuels, one of the biggest groups of new fuels, include alcohols, ethers, esters, and other chemicals made from plants, agricultural and forestry leftovers, and a large portion of municipal solid and industrial waste.

Biofuels used for transportation include bioethanol, biodiesel, biomethanol, and pyrolysis oils.

Unlike petroleum based fuels, biofuels are rapidly biodegradable. An accidental biofuel spill would have minimal impacts on wildlife and the environment, advocates say. They also argue that biofuels burn more cleanly and completely, resulting in less pollution since fewer petroleum pollutants are released into the air and water.

hope this helps uh dear ;)