Although wind and rain occasionally wash away the smoke given off by power plants and automobiles, much still remains. Particulate matter (soot, ash, and other solids), usually consist of unburned hydrocarbons, carbon monoxide, sulfur dioxide, various nitrogen oxides, ozone, and lead. These compounds undergo a series of chemical reactions in the presence of sunlight, the result is smog (a term used to describe a noxious mixture of fog and smoke) The process by which these pollutants harm our bodies begins by simply taking a breath...
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Particulates are present every where, in some areas they are as dense as 100,000 per milliliter of air. The damage begins when the particulates are inhaled into the small air sacs of our lungs called alveoli. With densities such as 100,000 per milliliter a single alveolus may receive 1,500 particulates per day...
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Energy Solutions We differentiate two forms of energy: sustainable energy and fossil fuels (primarily oil, coal and natural gas). Wind, solar, geothermal and tidal energy are all forms of sustainable energy: energy that does not pollute and that don’t affect the energy reserves of generations to come...	1 / 209
Alternative Fuels Although they still use gasoline, it uses less gas than a regular gasoline powered vehicle. There are also controversies with hybrid vehicles such as it being too quiet for blind people to hear...	2 / 311
crossing the red line Second, using hydrogen would still give off carbon and that contributes to the greenhouse effect. In my opinion people need to do their own research and not be deluded by the government that everything is alright, if global warming is to be stopped or slowed down work needs to begin right now because every day the chances of doing anything but speeding it up are becoming slimmer...	2 / 347
my homework Research efforts are currently focused on further developing the technology to broaden its use as a source of energy.	2 / 285