how does the automobile cause pollution?

Hi, It causes it through exhaust fumes mostly then there is the waste materials form overhauls (filters, bulbs, burnt oil, old tyres) and finally at the end of its lifecycle there is the hulk of the automobile itself to be got rid of.

you could expand on all of these topics and have yourself a neat essay.

If you want to expand on it you could also talk about the oil industry, biofuels (destroying the rainforests to grow biofuels) transporting of raw oil and oil tanker spillages and the resultant damage to the environment, to mention just a few of the things you could consider.

Good luck.

The exhaust fumes that are released chemicalize our air and slowly deplete the o-zone layer. Buses, tractors, and other big vehicles as well as regular cars that let off black smoke are killing the environment and taking the oxygen out of our system and replacing it with carbon dioxide. all vehicles have to pass smog test or they are catalyzing the process. But now there are cars that are more efficient that can help minimize the problem. But the previous damage is already done. Hopefully that helps

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TECHNICALLY A CAR IS ONLY SUPPOSE TO GIVE OFF SOME CARBOD DIOXIDE AND WATER AS A WASTE MATTER FOR BURNED FUEL BUT NOW IN DAYS THERE ARE SO MANY ADDITIVES TO THE GASOLINE THAT THEY HAD TO INCORPORATE CATALITIC CONVERTERS TO VEHICLES TO REDUCE THE POLUTION. IN THE SUMMER THERE ARE MORE ADDITIVES ADDED TO GASOLINE THAN IN THE WHINTER CAUSING MORE POLUTION..

GASOLINE WOULD BE CLEAN IF THERE WERE NO ADDITIVES MIXED INTO IT.

The burnt fuel which comes out the exhaust contains carbon monoxide.

i think this solves ur problem . look at this website

http://en.wikipedia.org/wiki/Evaporative_emission#...