Aartee Mishra is teaching live on Unacademy Plus
. When released into the air, CFCs rise to the stratosphere, where they come in contact with few other gases, which lead to a reduction of the ozone layer that protects the earth from the harmful ultraviolet rays of the sun. Lead It is present in petrol, diesel, lead batteries, paints, hair dye products, etc. Lead affects children in particular. It can cause nervous system damage and digestive problems and, in some. cases, cause cancer Ozone It occurs naturally in the upper layers of the atmosphere. This important gas shields the earth from the harmful ultraviolet rays of the sun.
However, at-the ground level, it is a pollutant with highly toxic effects. .Vehicles and industries are the major source of ground-level ozone emissions. Nitrogen oxide (Nox) . It causes smog and acid rain. It is produced from burning fuels including petrol, diesel, and coal. Nitrogen oxide can make children susceptible to respiratory diseases in winters. Suspended particulate matter (SPM) It consists of solids in the air in the form of smoke, dust, and vapour that can remain suspended for extended periods and is also the main source of haze whlch reduces visibility. The finer of these particles, when breathed in can lodge in our lungs and cause lung damage and respiratory problems. .
Sulphur dioxide (S02) . It is a gas produced from burning coal, mainly in thermal power plants. .Some industrial processes, such as production of paper and smelting of metals, produce sulphur dioxide. It is a major contributor to smog and acid rain. Sulphur dioxide can lead to lung diseases. Smog .The term smog was first used (1905) by Dr H A Des Voeux Smog has been coined from a combination of the words fog and smoke. Smog is a condition of fog that had soot or smoke in it. Photochemical smog (smog) is a term used to describe air pollution that is a result of the interaction of sunlight with certain chemicals in the atmosphere. .One of the primary components of photochemical smog is ozone.
Ground-level ozone is formed when vehicle emissions containing nitrogen (primarily from vehicle oxides Molor Vehides. VOC-Conmaining Products, etc. Motor vehiccs Power Plants. Industrlel Adtivees, elc. organic compounds (from paints, solvents,- printing petroleum products, vehicles, etc.) interact in the presence of sunlight. Volstie Organic Compounds (Vocs) inks, Ntrogen Oxides (NOx) Ground-level Ozone. Flne Partikulates (Smog)
Environment Book Summary Presented B Aartee Mishra
The effects of smog . It hampers visibility and harms the environment. Respiratory problems, deaths relating to bronchial diseases. Heavy smog greatly decreases ultraviolet radiation. . Heavy smog results in the decrease of natural vitamin D production leading to a rise in the cases of rickets. Indoor air pollution It refers to the physical, chemical, and biological characteristics of air in the indoor environment within a home, or an institution or commercial facility. It is the rural areas that face the greatest threat from indoor pollution, where people rely on traditional fuels such as firewood, charcoal, and cowdung for cooking and heating. Burning such fuels produces large amount of smoke
HOUSEHOLD AIR POLLUTION 3.8 milliOrT rom n ustid br die prematurely every year from household air pollution from cooking (2016).Household air pollution is mostly created by using kerosene and solid fuels such as wood with polluting stoves, open fires and lamps. 18% from stroke Women and children are the most at risk. 27% from ischaemic heart disease 2096 from chronic obstructive pulmonary disease <COPD) 8% from lung cancer 27% are due to pneumonia e 25% World Health Organization CLEAN AIR FOR HEALTH #AirPollution
Confirm Details UPSC CSE UPSC CSE Subscription 6 months plus firstname.lastname@example.org Apply 720 credits APPLY Redeem credits for up to 10% discount ( 30+ hours of live sessions every day Subscription Fee CGST SGST Structured courses in English and Hindi 30+ top educators New courses published every month O mishraarteel8gmai.com Learn more Get subscription
I THOUGHT OZONE WAS A GOOD THING? THERMOSPHERE It is - when it's in the upper atmo- sphere. Ozone (abbreviated 0s) is a colorless, odorless gas composed of three atoms of oxygen. MESOSPHERE OZONE LAYER Ozone occurs naturally in the upper atmosphere, shielding the earth's surface from the sun's harmful ultraviolet rays. STRATOSPHERE TROPOSPHERE SURFACE However, when ozone forms closer to the ground, in the troposphere, it can cause big problems GROUND-LEVEL OZONE