carbon monoxide has been reduced to less than half of what it was 30 years ago. it's nearly not there. same with hyudorcarbons. read up on catalytic converters, on how they work. they convert these gases, hence their name. if ya want, i'll go dig out a couple of my basic books, and copy some of the workings into here.
as for the huge amounts of forests being taken down? it doesn't matter how much we clean up cars, or factories. if people are still on this earth breathing, then there will be co2. the solution, is to stop cutting down the forests.....and before you try...there really isn't that much need to take em down. and no, i'm not a tree hugger.
Other problems include:acid rain and ocean acidification. You see, when CO
2 enters the upper troposphere, it interacts with water vapor to form carbonic acid. This acid comes down and lowers soil pH, making it harder to grow crops. Not only that, but the ocean absorbs large amounts of CO
2, and it too has become much more acidic. This increase in acidity means that organisms must expend extra energy to expel the extra hydrogen ions, and this will kill them in droves.
Also, you must contend with the fact that the amount of pollutants rises annually due to population growth. As countries become richer, their people will want to enjoy the finer parts of life, such as cars and mass produced items. The production of these things often involves the burning of fuel, which produces CO
2. Our planet's natural capacity to absorb our pollutants is already stretched, and as our populations grow this will put severe strain on our ecosystems.
Earth, a little blue ball of life in the void of space. It's diversity and hospitability are astounding, millions of species, trillions of creatures. Man is but one species, and it has transformed it from a primordial jungle into a gleaming civilization. However, his rise is as tragic as it is illustrious, for Earth suffers as he builds- the rain melts rocks, the oceans become a dead void, and smog as thick soup blankets entire swaths of land. Granted, this might sound like a bunch of mumbo-jumbo that will occur a zillion years from now, but are you willing to say that destroying the planet of your grandchildren and great-grandchildren does not faze you? Earth is not just your home or my home, it is the home of all mankind. Pollution is our greatest test since the atom bomb, and if we fail, man's story will end.
-Penguin