Ozone

<p>Ozone is a gas. It can be good or bad, depending on where it is. "Good" ozone occurs naturally about 10 to 30 miles above the Earth's surface. It shields us from the sun's ultraviolet rays. Part of the good ozone layer is gone. Man-made chemicals have destroyed it. Without enough good ozone, people may get too much ultraviolet radiation. This may increase the risk of skin cancer, cataracts, and immune system problems.</p> <p>"Bad" ozone is at ground level. It forms when pollutants from cars, factories, and other sources react chemically with sunlight. It is the main ingredient in <a href='https://medlineplus.gov/airpollution.html'>smog</a>. It is usually worst in the summer. Breathing bad ozone can be harmful. It can cause coughing, throat irritation, worsening of <a href='https://medlineplus.gov/asthma.html'>asthma</a>, <a href='https://medlineplus.gov/copd.html'>bronchitis, and emphysema</a>. It can lead to permanent lung damage, if you are regularly exposed to it.</p> <p >Environmental Protection Agency</p>

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0030106

C0030106

09/21/2001

Ozone is a gas. It can be good or bad, depending on where it is. "Good" ozone occurs naturally about 10 to 30 miles above the Earth's surface. It shields us from the sun's ultraviolet rays. Part of the good ozone layer is gone. Man-made chemicals have destroyed it. Without enough good ozone, people may get too much ultraviolet radiation. This may increase the risk of skin cancer, cataracts, and immune system problems.

"Bad" ozone is at ground level. It forms when pollutants from cars, factories, and other sources react chemically with sunlight. It is the main ingredient in smog. It is usually worst in the summer. Breathing bad ozone can be harmful. It can cause coughing, throat irritation, worsening of asthma, bronchitis, and emphysema. It can lead to permanent lung damage, if you are regularly exposed to it.

Environmental Protection Agency

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0023176

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0018627

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0007020

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0813971

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0001873

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0013835

http://purl.bioontology.org/ontology/MEDLINEPLUS/C1456535

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0032343

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0337182

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0003818

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0034629

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0020050

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0043056

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0599638

http://purl.bioontology.org/ontology/MEDLINEPLUS/C1456634

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0015333

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0679360

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0037354

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0028263

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0085420

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0014413

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0031253

http://purl.bioontology.org/ontology/MEDLINEPLUS/C2718051

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0025424

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0003947

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0369241

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0030106

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0030106

http://purl.bioontology.org/ontology/MEDLINEPLUS/C3494376

https://medlineplus.gov/ozone.html

Spanish https://medlineplus.gov/spanish/ozone.html

National Institute of Environmental Health Sciences http://www.niehs.nih.gov/

C0030106

Ozone

http://purl.bioontology.org/ontology/MEDLINEPLUS/C0001873

T103

http://purl.bioontology.org/ontology/MEDLINEPLUS/C1456610