false
No ozone is not always harmful. the ozone at stratosphreric level is good.
Ozone in the air we breathe, at more than 0.05ppm or so on a long term basis, is harmful to health.
Ozone can be harmful in high concentrations in the air we breathe, as it can irritate the respiratory system and worsen asthma symptoms. However, ozone in the stratosphere is helpful as it serves as a protective layer, shielding the Earth from harmful ultraviolet radiation.
Harmful gases released as harmful fumes into the air.(Mainly caused by man.)See "What is causing the depletion of the ozone layer?" in the "Related questions" section below.
Ozone plays a dual role in air pollution. In the upper atmosphere, the ozone layer protects Earth from harmful UV radiation. However, at ground level, ozone is a major component of smog and can have harmful effects on human health, ecosystems, and materials. Monitoring and controlling ground-level ozone is important for reducing air pollution and protecting public health.
Refrigerants containing chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are most harmful to the ozone layer. These refrigerants are commonly used in older air conditioning and refrigeration systems. Their release into the atmosphere can lead to ozone depletion.
Halons are harmful for ozone. They also react with ozone to deplete it.
The ozone layer is a protective layer in the Earth's atmosphere that helps protect us from the sun's harmful ultraviolet (UV) radiation. However, certain air pollutants, such as chlorofluorocarbons (CFCs) and other ozone-depleting substances, can break down ozone molecules leading to thinning of the ozone layer. This thinning allows more UV radiation to reach the Earth's surface, which can have harmful effects on human health and the environment.
Ozone in troposphere is harmful. It acts as a pollutant.
The harmful effects of ozone are seen at ground level. Ozone acts as a pollutant there.
Ozone layer cannot be harmful. It protects us from harmful UV rays of the sun.
The ozone is harmful not at stratosphere. It is harmful at some layer. Te layer is troposphere.