Photochemical smog is formed when emissions containing nitrogen oxide, such as car exhaust, interact with volatile organic compounds in the presence of sunlight. The oxygen in the compounds and the heat from the sunlight react to form ground-level ozone.
Smog requires sunlight, nitrogen oxides, volatile organic compounds and temperatures of at least 18 degrees Celsius to form. Sunlight breaks down nitrogen dioxides into nitrogen oxide and atomic oxygen molecules. The free atomic oxygen then reacts with atmospheric oxygen to form ozone, which is a necessary shield against radiation in the atmosphere, but harmful to life at ground level. While ozone also forms naturally under normal atmospheric conditions even at ground level, it is normally consumed by ambient nitrogen oxide. Pollution introduces volatile organic compounds that provide an alternate means for that nitrogen oxide to react, which means that the ozone is not consumed and can potentially reach toxic levels.
Smog represents a grave threat to the health of plants, humans and animals, according to the Environmental Protection Agency. Smog can irritate respiratory systems, aggravate chronic lung conditions and asthma, and even cause permanent lung damage. Smog causes damage to forests, crops and other green life and can destroy large swaths of vegetation.Learn More
GreenDiary states that driving less, using eco-friendly household products and avoiding agricultural chemicals are three ways to reduce ozone depletion. All of these suggestions would help a person pollute the ozone layer less by limiting that person’s use of toxins.Full Answer >
The causes of pollution are excessive use of natural resources, over industrialization, increase in global population and globalization. The use of chemicals, such as pesticides and weedicides, cause soil pollution.Full Answer >
"Don't Mess With Texas" is perhaps one of the most well-known anti-litter slogans. Examples from other states include "Let's Pick It Up New York," "Oklahoma, Keep Our Land Grand" and "Kansas! Don't Spoil It."Full Answer >
A variety of science fair projects can be done on acid rain, including the effects of acid rain on buildings or the effects of acid rain on the environment. To conduct this type of experiment, acid rain needs to be replicated by combining two tablespoons of vinegar with two cups of water. After the solution is mixed, the pH should be around 4 for the experiment.Full Answer >