which of the following is more eco-friendly than the others?
1.Burning of Petrol
2.Burning of COAL.
3.Burning of Charcoal
4.Burning Of Cowdung.
4 answers
Isn't cowdung a waste product? Petrol, and coal are non renewable fuels, charcoal is made from trees. In general, trees are nice to the environment and we don't want to burn them.
burning of petrol
burning of cow dung.(4.)
Burning of cow dung