K) Besides personal attempts to reduce ozone pollution, the EPA has initiated more stringent air-quality standards to reduce air pollution. Compliance with these standards by industries, manufacturers and state and local governments has significantly reduced the levels of many common air pollutants.
L) With continued conservation and reduction practices, adherence to ozone-pollution warnings, research and government regulation, ozone-pollution levels should
continue to fall. Perhaps future generations will not be threatened by this environmental pollutant.
M) The thing that determines whether ozone is good or bad is its location. Ozone is good,,when it is in the stratosphere. The stratosphere is a layer of the atmosphere starting at the level of about 6 miles above sea level. The stratosphere naturally contains about six parts per million of ozone, and this ozone is very beneficial because it absorbs UV radiation and prevents it from reaching us.
N) Ozone is bad when it is at ground level. Ozone is a very reactive gas that is hard on lung tissue. It also damages plants and buildings. Any ozone at ground level is a problem. Unfortunately, chemicals in car exhaust and chemicals produced by some industries react with light to produce lots of ozone at ground level. In cities, the ozone level can rise to a point where it becomes hazardous to our health. Thats when you hear about an ozone warning on the news.
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