When the engine is cold or when it is misfiring.
a lot
gas from a car
Mileage doesn't matter. As long as it is maintained properly and the check engine light isn't on it will pass emissions.
Planes.
because CNG does not cause of any pollution and does not emit carbon.
No, nuclear power maintains environment non pollution as it does emit green house gases and do not contribute to global warming and environment pollution.
Yes, a a battery will emit the fumes from the Sulfuric acid which is extremely toxic.
Cars emit the most pollutants when accelerating. If the lights are synchronized to allow the heaviest flow of traffic to move without stopping and starting the need for acceleration is minimized and pollution reduced. An added benefit is that, since cars also emit more pollution when idling, unless they turn off their engines, allowing more cars to travel in their most efficient engine speed range is enhanced by light sychronization.
Pollution of the atmosphere comes from many sources and most of them are caused by man- car emissions, smoke from factories, and by-products of manufacturing.
Car pollution is a major problem in cities around the world. Large cities in China and India are suffering serious issues because of car pollution.
It checks how much pollution in puts out
my most positive answer to this question is that i do not think hybrid cars emit radiation. it just doesnt make sense. They emit the same radiation any other car does: IR when the engine is running, visible light when the headlights are on, RF if you are using your CB radio, etc.