Question

saving environment by less cars

Answer 1

now a days as the population is increasing day by day the number of vehicles used by people are also increasing ...we can decrease the number of cars by using bicycles instead of cars.. it is the matter of saving environment so we can also use CNG in place of petrol in our cars that reduces smoke pollution and save our environment

Answer 2

cars run on diesel.we know that cars produce smoke( due to combustion).this smoke is not oxgen but carbondioxide,crbon mono oxide etc. ozone layer protects us from ultravilet rays of sun.but now,co2 destroys ozone layer and there will be increase in temperarue then drought,soil eosion.........hence we can save environment by less cars.