Answer: Ozone is considered as chief polluting gas.
Explanation:
The ozone is a ground level pollutant. It is a colorless gas. It causes irritation in the eyes and respiratory tract. It is one of the components of smog as it causes pollution in the atmosphere. It is produced by the two primary pollutants that are nitrogen oxides and volatile organic compounds when they react with the sunlight. The ozone makes the air irrespirable. It is the main cause of throat irritation, labored breath, pain in chest and also responsible for respiratory diseases. It reduces the body's ability against infection. The ozone depleting substances like aerosol, chlorofluorocarbon are widening the ozone depleting zone as halides present in these substances react with the ozone causing depletion. This allows the entry of harmful ultraviolet radiation penetrating the atmospheric layers.
The correct answer is - d. ash.
Volcanoes let out on the surface and in the air lots of different things, from lava and huge rocks to ashes and toxic gases. The one thing that causes the biggest trouble in air pollution is the ash. When a volcano erupts it lets out huge amounts of ash that can cover up whole regions, and they can have an impact of the global climate by covering the sky with ashes that stop the sun rays reach the Earth. These ashes are a very big pollutant of the air and completely change its structure, for the living creatures air with big amount of ash in it can be lethal.
<span> Tutsi minority and a Hutu majority</span>
France.When they was building its first world empire