Destruction Of The Ozone Layer
•Download as PPT, PDF•
13 likes•31,974 views
The ozone layer protects life on Earth by absorbing most of the sun's harmful ultraviolet rays. However, chlorofluorocarbons (CFCs) used in refrigerants, aerosols, and other products are destroying the ozone layer by releasing chlorine atoms that break down ozone molecules. This depletion causes increased skin cancer, cataracts, damage to crops and plankton, and impacts the Earth's climate. While reducing CFC use helps, fully phasing out these chemicals is needed to allow the ozone layer to recover over time.
Report
Share
Report
Share
![Problem Description ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
Ozone depletion
Ozone depletion is primarily caused by chlorofluorocarbons (CFCs) which were historically used in air conditioners, refrigerators, aerosol sprays, and plastic foams. CFCs undergo chemical reactions in the atmosphere that destroy ozone molecules in the stratosphere. This has led to a large ozone hole forming over Antarctica that is enlarging and could take over 50 years to restore. The thinning ozone layer allows more ultraviolet radiation to reach the Earth's surface, increasing risks of skin cancer, cataracts, and damage to plants and marine life.
Ozone layer
The ozone layer is a layer in the Earth's atmosphere that contains relatively high concentrations of ozone. It was discovered in 1913 and protects life on Earth by absorbing harmful ultraviolet radiation from the sun. Depletion of the ozone layer is caused by chemicals like chlorofluorocarbons that were used in aerosol sprays and refrigerants until their ban in the late 1970s. Ozone depletion increases UV radiation at the surface of the Earth and can potentially damage skin, eyes, and suppress immune systems.
Ozone deplection
The document discusses ozone depletion and the ozone layer. It explains that ozone in the stratosphere protects life on Earth by filtering out UV radiation from the sun. In the 1980s, evidence emerged of an ozone hole developing over Antarctica each spring. The cause was determined to be man-made chlorofluorocarbons (CFCs) which are transported into the stratosphere by winds and break down ozone molecules. While CFC production has been restricted, full recovery of the ozone layer may not occur until 2050 due to CFCs' long lifetime in the atmosphere. Ozone depletion can negatively impact human health and ecosystems if it results in increased UV radiation reaching the Earth's surface.
Ozone Depletion
The document discusses ozone depletion, its causes, effects, and potential solutions. It defines the ozone layer and depletion, noting a large hole observed over the poles. The worst affected region is Antarctica, where ozone levels have dropped over 50% since 1975. Main causes of depletion include chlorofluorocarbons (CFCs), sulfur, and stratospheric clouds containing chlorine and bromine. Depletion leads to increased UV rays and consequences like higher skin cancer rates, reduced crop yields, and damage to planktons and eyes. Suggested solutions include phasing out pollutants, international cooperation, and destroying CFCs.
ozone layer depletion
The document summarizes information about the ozone layer, including:
1. The ozone layer is found in the stratosphere and protects life on Earth by absorbing harmful UV radiation.
2. Ozone in the stratosphere ("good ozone") is important, while ground-level tropospheric ozone ("bad ozone") can harm health.
3. Ozone depletion is caused by ozone-depleting substances like CFCs released from products, and one chlorine atom can destroy 100,000 ozone molecules. Depletion is most severe over Antarctica.
Ozone Layer
The ozone layer in the stratosphere absorbs most UV light from the sun. Ozone is formed when oxygen molecules are split by UV light or lightning, then join with other oxygen molecules to form ozone (O3). Chlorofluorocarbons (CFCs) used in refrigerants and air conditioners were depleting the ozone layer as they take 10-20 years to break down in the stratosphere, and each chlorine atom can destroy 100,000 ozone molecules. This was causing seasonal thinning of the ozone layer over Antarctica, known as the ozone hole. Thinning of the ozone layer allows more harmful UV-B radiation to pass through, which can damage DNA and
Ozone Layer and Chemicals
This presentation is about Ozone Layer and chemicals known to cause its depletion.
It also covers information about Ozone Hole and Correlation between Ozone depletion and skin diseases due to Ultra Violet light.It also contains no. of ways to limit ozone deterioration.
Ozone depletion a brief study
The document discusses the effects of ozone depletion. It describes how in 1985, researchers discovered a large hole in the ozone layer over Antarctica. The ozone layer protects life from UV radiation. Ozone depletion is caused by both meteorological and chemical mechanisms, like CFCs releasing chlorine that destroys ozone. Increased UV radiation can damage DNA in organisms and increase skin cancer rates in humans. International agreements have sought to phase out ozone depleting chemicals to allow the ozone layer to recover over coming decades.
Recommended
Ozone depletion
Ozone depletion is primarily caused by chlorofluorocarbons (CFCs) which were historically used in air conditioners, refrigerators, aerosol sprays, and plastic foams. CFCs undergo chemical reactions in the atmosphere that destroy ozone molecules in the stratosphere. This has led to a large ozone hole forming over Antarctica that is enlarging and could take over 50 years to restore. The thinning ozone layer allows more ultraviolet radiation to reach the Earth's surface, increasing risks of skin cancer, cataracts, and damage to plants and marine life.
Ozone layer
The ozone layer is a layer in the Earth's atmosphere that contains relatively high concentrations of ozone. It was discovered in 1913 and protects life on Earth by absorbing harmful ultraviolet radiation from the sun. Depletion of the ozone layer is caused by chemicals like chlorofluorocarbons that were used in aerosol sprays and refrigerants until their ban in the late 1970s. Ozone depletion increases UV radiation at the surface of the Earth and can potentially damage skin, eyes, and suppress immune systems.
Ozone deplection
The document discusses ozone depletion and the ozone layer. It explains that ozone in the stratosphere protects life on Earth by filtering out UV radiation from the sun. In the 1980s, evidence emerged of an ozone hole developing over Antarctica each spring. The cause was determined to be man-made chlorofluorocarbons (CFCs) which are transported into the stratosphere by winds and break down ozone molecules. While CFC production has been restricted, full recovery of the ozone layer may not occur until 2050 due to CFCs' long lifetime in the atmosphere. Ozone depletion can negatively impact human health and ecosystems if it results in increased UV radiation reaching the Earth's surface.
Ozone Depletion
The document discusses ozone depletion, its causes, effects, and potential solutions. It defines the ozone layer and depletion, noting a large hole observed over the poles. The worst affected region is Antarctica, where ozone levels have dropped over 50% since 1975. Main causes of depletion include chlorofluorocarbons (CFCs), sulfur, and stratospheric clouds containing chlorine and bromine. Depletion leads to increased UV rays and consequences like higher skin cancer rates, reduced crop yields, and damage to planktons and eyes. Suggested solutions include phasing out pollutants, international cooperation, and destroying CFCs.
ozone layer depletion
The document summarizes information about the ozone layer, including:
1. The ozone layer is found in the stratosphere and protects life on Earth by absorbing harmful UV radiation.
2. Ozone in the stratosphere ("good ozone") is important, while ground-level tropospheric ozone ("bad ozone") can harm health.
3. Ozone depletion is caused by ozone-depleting substances like CFCs released from products, and one chlorine atom can destroy 100,000 ozone molecules. Depletion is most severe over Antarctica.
Ozone Layer
The ozone layer in the stratosphere absorbs most UV light from the sun. Ozone is formed when oxygen molecules are split by UV light or lightning, then join with other oxygen molecules to form ozone (O3). Chlorofluorocarbons (CFCs) used in refrigerants and air conditioners were depleting the ozone layer as they take 10-20 years to break down in the stratosphere, and each chlorine atom can destroy 100,000 ozone molecules. This was causing seasonal thinning of the ozone layer over Antarctica, known as the ozone hole. Thinning of the ozone layer allows more harmful UV-B radiation to pass through, which can damage DNA and
Ozone Layer and Chemicals
This presentation is about Ozone Layer and chemicals known to cause its depletion.
It also covers information about Ozone Hole and Correlation between Ozone depletion and skin diseases due to Ultra Violet light.It also contains no. of ways to limit ozone deterioration.
Ozone depletion a brief study
The document discusses the effects of ozone depletion. It describes how in 1985, researchers discovered a large hole in the ozone layer over Antarctica. The ozone layer protects life from UV radiation. Ozone depletion is caused by both meteorological and chemical mechanisms, like CFCs releasing chlorine that destroys ozone. Increased UV radiation can damage DNA in organisms and increase skin cancer rates in humans. International agreements have sought to phase out ozone depleting chemicals to allow the ozone layer to recover over coming decades.
Ozone Depletion
Ozone depletion describes a decline in stratospheric ozone levels since the 1970s, with a seasonal ozone hole forming over Antarctica each spring. The primary cause is chlorine and bromine atoms released from man-made chemicals like CFCs. In polar regions, ozone depletion is greatly enhanced by reactions on surfaces of polar stratospheric clouds that convert stable reservoir compounds into reactive radicals, catalytically destroying ozone. The Antarctic ozone hole forms each spring when sunlight drives these reactions after polar stratospheric clouds form over the winter.
Ozone depletion
The document discusses ozone depletion in the stratosphere. It notes that a thin layer of ozone in the stratosphere protects the Earth from harmful UV radiation. The concentration of ozone is highest at mid-latitudes in the stratosphere. The document then explains that chlorofluorocarbons (CFCs) released into the atmosphere can travel to the stratosphere and destroy ozone molecules. It highlights that annual ozone depletion over Antarctica reaches up to 70% due to chemical reactions on polar stratospheric clouds that release chlorine. The 1991 eruption of Mount Pinatubo increased mid-latitude ozone depletion by injecting sulfur into the stratosphere. International agreements aim to phase out CFC production but developing nations
Ozone depletion
An ozone layer located 20-25 km above the earth's surface absorbs harmful ultraviolet radiation from the sun, protecting life on earth. Ultraviolet rays decompose oxygen into atomic oxygen, which then combines with molecular oxygen to form ozone. However, chlorofluorocarbons (CFCs) released into the atmosphere destroy ozone molecules. One chlorine atom can destroy up to 100,000 ozone molecules over time. The Montreal Protocol was formed to phase out the production of CFCs and other ozone-depleting substances.
Ozone Layer depletion C.U.EBONG
The document discusses the stratospheric ozone layer, the causes and impacts of its depletion, and efforts to address the problem. It notes that the ozone layer protects the Earth from UV radiation but has been thinning due to ozone-depleting substances like CFCs. Increased UV exposure can harm humans, agriculture, and ecosystems. The Montreal Protocol banned production of major ozone-depleting chemicals and governments are regulating their use, but continued actions are needed to prevent further ozone layer depletion.
Ozone Depletion
The document discusses the ozone layer, its importance in blocking harmful UV radiation, and how it has been damaged by CFC emissions. It also describes the Montreal Protocol, an international agreement that regulated CFC production and helped slow ozone depletion. The ozone layer is found in the stratosphere and protects life on Earth by absorbing 95% of UVB and all UVC radiation. CFCs released the chlorine radicals that catalyzed ozone destruction in a cyclic reaction. The Montreal Protocol phased out CFC production and has slowed but not yet reversed ozone layer depletion.
Ozone Depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Ozone layer, Ozone–oxygen cycle, ozone depletion,Ozone Depleting Substances, Ozone Depletion Process,Ozone Hole, Effect Of Ozone Depletion,solution
Ozone layer
The document discusses ozone depletion and the importance of the ozone layer. It explains that the ozone layer is found in the stratosphere between 10-50km above the Earth's surface and protects the surface from harmful UV radiation. It also discusses how CFCs released into the atmosphere were depleting the ozone layer by causing a chemical reaction that breaks down ozone molecules. As a result of the thinning ozone layer, more UV radiation reaches the Earth's surface, increasing risks of skin cancer, eye disease, and damage to food crops and marine life.
What Is Ozone Layer Destruction
The ozone layer, situated 15-30 km above the Earth's surface, protects life by absorbing harmful UV radiation from the sun. CFCs released into the atmosphere are destroying the ozone layer, with depletion rates highest in polar regions. This destruction increases harmful UV rays, risking skin cancer, eye cataracts, and damage to plants and small organisms. CFCs were widely used but are being phased out and banned due to their ozone-destroying effects.
The Ozone Layer
The document discusses ozone, its importance for protecting life on Earth from UV radiation, and the problem of ozone depletion caused by ozone depleting substances (ODS) like CFCs. It notes that ozone exists in different layers of the atmosphere and that the ozone layer in the stratosphere shields the planet from harmful UV rays. It then explains how certain man-made chemicals released into the air can destroy ozone molecules, leading to ozone depletion. The document outlines international agreements like the Montreal Protocol to phase out the production of ODS and protect the ozone layer. It concludes by suggesting individual actions people can take to help limit ozone depletion.
Ozone layer depletion
The ozone layer sits 9.3 to 18.6 miles above Earth and shields it from harmful UV radiation. It is formed from ozone, a molecule containing three oxygen atoms that absorbs most UV rays. The ozone layer has been depleted since the 1960s due to gases like CFCs released from aerosols and refrigerants, leading to holes forming. This depletion allows more UV radiation to reach Earth and increases health risks like skin cancer for humans, infections for animals, and decreased crop yields. The 1987 Montreal Protocol aimed to phase out ozone-depleting substances by 2010.
Ozone depletion
This document summarizes a seminar on ozone depletion presented by Ravi Singh Jadaun on March 23, 2017 at Jiwanji University in Gwalior, India. It defines the ozone layer, discusses its structure and history. It then explains the causes of ozone depletion, both natural and man-made, focusing on ozone depleting substances like CFCs. The effects of depletion on human health, the environment, marine life and animals are outlined. Finally, solutions to reduce depletion like banning pesticides and using public transportation are proposed.
Ozone Depletion
Ozone in the stratosphere protects the Earth from harmful UV rays but its concentration is being reduced by ozone-depleting pollutants like CFCs and NOx. CFCs were commonly used in aerosol sprays and refrigerants until they were banned, but their effects will persist for a long time. When CFCs and NOx reach the stratosphere, their breakdown releases chlorine and nitrogen atoms that catalyze the destruction of ozone molecules, reducing the protective ozone layer. Alternatives to CFCs without chlorine, like HFCs and HCFCs, have been developed to prevent further ozone depletion.
Ozone depletion....varun
The document discusses ozone, the ozone layer, and ozone depletion. It defines ozone as a triatomic form of oxygen found in the upper and lower atmosphere, and the ozone layer as absorbing 97-99% of the sun's ultraviolet light. The ozone layer is being destroyed by chemicals like CFCs released from industries and vehicles. Low temperatures in the upper atmosphere allow chlorine and bromine to destroy ozone, forming a hole. Overexposure to ultraviolet rays due to ozone depletion increases risks of skin cancer, eye damage, immune system damage, and DNA damage. Actions are needed to limit chemicals that deplete ozone and encourage plant growth to increase oxygen production.
The ozone layer
The ozone layer is a gas layer located in the stratosphere that protects life on Earth from UV radiation. CFCs released into the atmosphere were depleting the ozone layer by destroying ozone molecules. This was causing the ozone hole over Antarctica to grow and allowing more UV radiation to reach the Earth's surface, threatening life. In response, the international community adopted the Montreal Protocol to phase out CFC production, which has successfully led to the recovery of the ozone layer by 2050-2075 while also helping reduce greenhouse gases.
The ozone layer
The document discusses the ozone layer, including what it is, where it is located, and why it is important for life on Earth. It protects the Earth from harmful ultraviolet radiation from the sun. The ozone layer is being affected by human emissions of chlorofluorocarbons (CFCs), which are destroying the ozone. This is leading to thinning of the ozone layer and the formation of an ozone hole over Antarctica. The consequences of ozone depletion include increased skin cancer risks and other health impacts. Humans can help protect themselves from UV radiation by wearing sunscreen, hats, and sunglasses when outside.
ozone depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
• Introduction
Ozone
Ozone layer
• Ozone–oxygen cycle
Chapman cycle
• Ozone Depletion
• Ozone Hole
• Effect Of Ozone Depletion
• Solution
• World Ozone Day
Ozone & Depletion
The document discusses ozone depletion and the formation of the ozone layer. It provides details on the following:
1) The ozone layer is found in the stratosphere between 10-50km above the ground. It protects the earth from harmful UV radiation.
2) Ozone is formed through a reaction where oxygen molecules are split by UV light into atomic oxygen, which then combines with other oxygen molecules to form ozone.
3) Chlorofluorocarbons (CFCs) were widely used but are now known to destroy ozone. CFCs release chlorine atoms that catalyze the breakdown of ozone into oxygen. Depletion is now severe over Antarctica.
4)
Ozone- A wonder umbrella
This slide deals about ozone layer ,it's importance to mother nature, causes of depletion and its consequences.
The hole in the ozone layer(2)
The document discusses the ozone layer hole, noting that it was discovered in 1985 and grew significantly in size and rate in the 1990s. The main cause of ozone layer depletion is man-made chlorofluorocarbons (CFCs), which break down ozone molecules. The ozone layer hole is primarily located above Antarctica. Consequences of ozone layer depletion include increased skin cancer rates due to higher ultraviolet radiation levels reaching the Earth's surface and contributions to global warming. The 1987 Montreal Agreement has led to reduced CFCs and a predicted full recovery of the ozone layer by 2050.
Ozone layer depletion
This powepoint presentation deals on ozone layer, it's importance, it's depletion, consequences on human etc.
Ozone layer depletion ppt
The document discusses the ozone layer and the factors contributing to its depletion. It notes that the ozone layer shields the Earth from UV radiation and was discovered to be depleting in the 1970s due to ozone-depleting substances (ODS) released into the atmosphere. The main ODS that damage the ozone layer are listed. The text then outlines the principal steps in how ODS reach the stratosphere and cause ozone depletion, as well as the human health and environmental effects of increased UV exposure due to ozone layer thinning. International agreements like the Montreal Protocol and domestic policies in countries like the Philippines are mentioned as mitigation efforts to prevent further ozone depletion.
Ozone layer
The document discusses the ozone layer, its formation and depletion over time. Some key points:
- The ozone layer is found 20-30km above the Earth's surface and absorbs UV radiation.
- Depletion is caused mainly by CFCs and halogen gases, which are broken down by UV rays to release chlorine atoms that destroy ozone.
- Significant ozone depletion up to 50% has been observed over the Antarctic region, known as the ozone hole.
- Effects of depletion include increased UV rays reaching the Earth's surface, which can harm plants, marine life, and increase skin cancer risks in humans.
- International agreements like the Montreal Protocol have led
More Related Content
What's hot
Ozone Depletion
Ozone depletion describes a decline in stratospheric ozone levels since the 1970s, with a seasonal ozone hole forming over Antarctica each spring. The primary cause is chlorine and bromine atoms released from man-made chemicals like CFCs. In polar regions, ozone depletion is greatly enhanced by reactions on surfaces of polar stratospheric clouds that convert stable reservoir compounds into reactive radicals, catalytically destroying ozone. The Antarctic ozone hole forms each spring when sunlight drives these reactions after polar stratospheric clouds form over the winter.
Ozone depletion
The document discusses ozone depletion in the stratosphere. It notes that a thin layer of ozone in the stratosphere protects the Earth from harmful UV radiation. The concentration of ozone is highest at mid-latitudes in the stratosphere. The document then explains that chlorofluorocarbons (CFCs) released into the atmosphere can travel to the stratosphere and destroy ozone molecules. It highlights that annual ozone depletion over Antarctica reaches up to 70% due to chemical reactions on polar stratospheric clouds that release chlorine. The 1991 eruption of Mount Pinatubo increased mid-latitude ozone depletion by injecting sulfur into the stratosphere. International agreements aim to phase out CFC production but developing nations
Ozone depletion
An ozone layer located 20-25 km above the earth's surface absorbs harmful ultraviolet radiation from the sun, protecting life on earth. Ultraviolet rays decompose oxygen into atomic oxygen, which then combines with molecular oxygen to form ozone. However, chlorofluorocarbons (CFCs) released into the atmosphere destroy ozone molecules. One chlorine atom can destroy up to 100,000 ozone molecules over time. The Montreal Protocol was formed to phase out the production of CFCs and other ozone-depleting substances.
Ozone Layer depletion C.U.EBONG
The document discusses the stratospheric ozone layer, the causes and impacts of its depletion, and efforts to address the problem. It notes that the ozone layer protects the Earth from UV radiation but has been thinning due to ozone-depleting substances like CFCs. Increased UV exposure can harm humans, agriculture, and ecosystems. The Montreal Protocol banned production of major ozone-depleting chemicals and governments are regulating their use, but continued actions are needed to prevent further ozone layer depletion.
Ozone Depletion
The document discusses the ozone layer, its importance in blocking harmful UV radiation, and how it has been damaged by CFC emissions. It also describes the Montreal Protocol, an international agreement that regulated CFC production and helped slow ozone depletion. The ozone layer is found in the stratosphere and protects life on Earth by absorbing 95% of UVB and all UVC radiation. CFCs released the chlorine radicals that catalyzed ozone destruction in a cyclic reaction. The Montreal Protocol phased out CFC production and has slowed but not yet reversed ozone layer depletion.
Ozone Depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Ozone layer, Ozone–oxygen cycle, ozone depletion,Ozone Depleting Substances, Ozone Depletion Process,Ozone Hole, Effect Of Ozone Depletion,solution
Ozone layer
The document discusses ozone depletion and the importance of the ozone layer. It explains that the ozone layer is found in the stratosphere between 10-50km above the Earth's surface and protects the surface from harmful UV radiation. It also discusses how CFCs released into the atmosphere were depleting the ozone layer by causing a chemical reaction that breaks down ozone molecules. As a result of the thinning ozone layer, more UV radiation reaches the Earth's surface, increasing risks of skin cancer, eye disease, and damage to food crops and marine life.
What Is Ozone Layer Destruction
The ozone layer, situated 15-30 km above the Earth's surface, protects life by absorbing harmful UV radiation from the sun. CFCs released into the atmosphere are destroying the ozone layer, with depletion rates highest in polar regions. This destruction increases harmful UV rays, risking skin cancer, eye cataracts, and damage to plants and small organisms. CFCs were widely used but are being phased out and banned due to their ozone-destroying effects.
The Ozone Layer
The document discusses ozone, its importance for protecting life on Earth from UV radiation, and the problem of ozone depletion caused by ozone depleting substances (ODS) like CFCs. It notes that ozone exists in different layers of the atmosphere and that the ozone layer in the stratosphere shields the planet from harmful UV rays. It then explains how certain man-made chemicals released into the air can destroy ozone molecules, leading to ozone depletion. The document outlines international agreements like the Montreal Protocol to phase out the production of ODS and protect the ozone layer. It concludes by suggesting individual actions people can take to help limit ozone depletion.
Ozone layer depletion
The ozone layer sits 9.3 to 18.6 miles above Earth and shields it from harmful UV radiation. It is formed from ozone, a molecule containing three oxygen atoms that absorbs most UV rays. The ozone layer has been depleted since the 1960s due to gases like CFCs released from aerosols and refrigerants, leading to holes forming. This depletion allows more UV radiation to reach Earth and increases health risks like skin cancer for humans, infections for animals, and decreased crop yields. The 1987 Montreal Protocol aimed to phase out ozone-depleting substances by 2010.
Ozone depletion
This document summarizes a seminar on ozone depletion presented by Ravi Singh Jadaun on March 23, 2017 at Jiwanji University in Gwalior, India. It defines the ozone layer, discusses its structure and history. It then explains the causes of ozone depletion, both natural and man-made, focusing on ozone depleting substances like CFCs. The effects of depletion on human health, the environment, marine life and animals are outlined. Finally, solutions to reduce depletion like banning pesticides and using public transportation are proposed.
Ozone Depletion
Ozone in the stratosphere protects the Earth from harmful UV rays but its concentration is being reduced by ozone-depleting pollutants like CFCs and NOx. CFCs were commonly used in aerosol sprays and refrigerants until they were banned, but their effects will persist for a long time. When CFCs and NOx reach the stratosphere, their breakdown releases chlorine and nitrogen atoms that catalyze the destruction of ozone molecules, reducing the protective ozone layer. Alternatives to CFCs without chlorine, like HFCs and HCFCs, have been developed to prevent further ozone depletion.
Ozone depletion....varun
The document discusses ozone, the ozone layer, and ozone depletion. It defines ozone as a triatomic form of oxygen found in the upper and lower atmosphere, and the ozone layer as absorbing 97-99% of the sun's ultraviolet light. The ozone layer is being destroyed by chemicals like CFCs released from industries and vehicles. Low temperatures in the upper atmosphere allow chlorine and bromine to destroy ozone, forming a hole. Overexposure to ultraviolet rays due to ozone depletion increases risks of skin cancer, eye damage, immune system damage, and DNA damage. Actions are needed to limit chemicals that deplete ozone and encourage plant growth to increase oxygen production.
The ozone layer
The ozone layer is a gas layer located in the stratosphere that protects life on Earth from UV radiation. CFCs released into the atmosphere were depleting the ozone layer by destroying ozone molecules. This was causing the ozone hole over Antarctica to grow and allowing more UV radiation to reach the Earth's surface, threatening life. In response, the international community adopted the Montreal Protocol to phase out CFC production, which has successfully led to the recovery of the ozone layer by 2050-2075 while also helping reduce greenhouse gases.
The ozone layer
The document discusses the ozone layer, including what it is, where it is located, and why it is important for life on Earth. It protects the Earth from harmful ultraviolet radiation from the sun. The ozone layer is being affected by human emissions of chlorofluorocarbons (CFCs), which are destroying the ozone. This is leading to thinning of the ozone layer and the formation of an ozone hole over Antarctica. The consequences of ozone depletion include increased skin cancer risks and other health impacts. Humans can help protect themselves from UV radiation by wearing sunscreen, hats, and sunglasses when outside.
ozone depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
• Introduction
Ozone
Ozone layer
• Ozone–oxygen cycle
Chapman cycle
• Ozone Depletion
• Ozone Hole
• Effect Of Ozone Depletion
• Solution
• World Ozone Day
Ozone & Depletion
The document discusses ozone depletion and the formation of the ozone layer. It provides details on the following:
1) The ozone layer is found in the stratosphere between 10-50km above the ground. It protects the earth from harmful UV radiation.
2) Ozone is formed through a reaction where oxygen molecules are split by UV light into atomic oxygen, which then combines with other oxygen molecules to form ozone.
3) Chlorofluorocarbons (CFCs) were widely used but are now known to destroy ozone. CFCs release chlorine atoms that catalyze the breakdown of ozone into oxygen. Depletion is now severe over Antarctica.
4)
Ozone- A wonder umbrella
This slide deals about ozone layer ,it's importance to mother nature, causes of depletion and its consequences.
The hole in the ozone layer(2)
The document discusses the ozone layer hole, noting that it was discovered in 1985 and grew significantly in size and rate in the 1990s. The main cause of ozone layer depletion is man-made chlorofluorocarbons (CFCs), which break down ozone molecules. The ozone layer hole is primarily located above Antarctica. Consequences of ozone layer depletion include increased skin cancer rates due to higher ultraviolet radiation levels reaching the Earth's surface and contributions to global warming. The 1987 Montreal Agreement has led to reduced CFCs and a predicted full recovery of the ozone layer by 2050.
Ozone layer depletion
This powepoint presentation deals on ozone layer, it's importance, it's depletion, consequences on human etc.
What's hot (20)
Viewers also liked
Ozone layer depletion ppt
The document discusses the ozone layer and the factors contributing to its depletion. It notes that the ozone layer shields the Earth from UV radiation and was discovered to be depleting in the 1970s due to ozone-depleting substances (ODS) released into the atmosphere. The main ODS that damage the ozone layer are listed. The text then outlines the principal steps in how ODS reach the stratosphere and cause ozone depletion, as well as the human health and environmental effects of increased UV exposure due to ozone layer thinning. International agreements like the Montreal Protocol and domestic policies in countries like the Philippines are mentioned as mitigation efforts to prevent further ozone depletion.
Ozone layer
The document discusses the ozone layer, its formation and depletion over time. Some key points:
- The ozone layer is found 20-30km above the Earth's surface and absorbs UV radiation.
- Depletion is caused mainly by CFCs and halogen gases, which are broken down by UV rays to release chlorine atoms that destroy ozone.
- Significant ozone depletion up to 50% has been observed over the Antarctic region, known as the ozone hole.
- Effects of depletion include increased UV rays reaching the Earth's surface, which can harm plants, marine life, and increase skin cancer risks in humans.
- International agreements like the Montreal Protocol have led
The ozone layer and its depletion
The document summarizes information about the ozone layer and its depletion. It discusses how the ozone layer protects the Earth from ultraviolet radiation from the sun. It then explains how chlorofluorocarbons (CFCs) were depleting the ozone layer when they were released into the atmosphere. CFCs break down ozone molecules in the stratosphere. The document also outlines observations that show the ozone layer depletion peaked around 2010 and is expected to fully recover by 2065 as CFC use has been restricted by the Montreal Protocol.
Ozone layer depletion ppt
The ozone layer absorbs most UV radiation from the sun. It contains high concentrations of ozone and is mainly located in the lower stratosphere. Chlorofluorocarbons (CFCs) and other halogenated compounds released by human activities are the primary cause of ozone depletion by destroying ozone molecules. This has led to a 4% decline in ozone per decade and the formation of an ozone hole over Antarctica. Increased UV radiation due to ozone depletion poses risks to human health, animals, and crop production. The Montreal Protocol was adopted in 1987 to phase out ozone depleting substances to protect the ozone layer.
Air Pollution
Air Pollution,Indoor and outdoor, Formation of ozone layer & its depletion. Effects of ozone depletion,air pollution on health.
Ozone Layer Depletion, Greenhouse Effect & Global Warming
This is a presentation regarding some of those little threats our Earth is going through....The presentation is made interesting with a wide range of pictures, illustrations and animations...Please download to see the animated slideshow...Hope this comes of help to you!
Humans and pollution
This document discusses various types of pollution caused by human activities, including point source pollution which comes from identifiable sources like factories, and non-point source pollution which comes from dispersed sources like vehicle emissions. It describes primary and secondary pollutants, as well as persistent organic pollutants. The document also covers topics like acute vs chronic pollution, methods of pollution detection and monitoring, and some actions that can be taken to address pollution problems.
ozone depletion
The ozone layer exists between the troposphere and stratosphere and is made up of ozone gas. It forms when oxygen molecules interact with ultraviolet light from the sun. Depletion of the ozone layer allows more harmful UV rays to reach the Earth's surface, increasing the risk of skin cancer and cataracts in humans as well as damage to plants.
Ozone depletion
Ozone in the stratosphere protects life on Earth by absorbing harmful ultraviolet radiation from the sun. Chlorofluorocarbons (CFCs) released from industrial applications are the primary cause of ozone depletion as they release chlorine atoms that break down ozone molecules. In 1985, scientists discovered an ozone hole over Antarctica, showing a severe depletion. The 1987 Montreal Protocol aimed to phase out ozone-depleting substances to allow the ozone layer to recover over time, though full recovery is not expected until around 2068. Increased UV radiation can damage DNA and immune systems in humans and phytoplankton productivity.
Air Pollution
The 1952 London Smog disaster killed over 4,000 people in London due to air pollution. Conditions of cold weather and lack of wind led to dense smog forming, trapping pollutants near the ground. This caused increased deaths from respiratory and heart issues. Subsequent clean air acts were passed in 1956 and 1968 to reduce domestic coal burning and introduce pollution controls on industry to prevent future smog disasters.
Man made disaster london
The Great London Smog of 1952 was a severe air pollution event that covered London in a thick smog for five days between December 5-8, 1952. [1] It caused increased mortality, with over 4,000 additional deaths reported during and after the smog event. [2] The smog was caused by a combination of weather conditions trapping pollution from coal smoke and other emissions close to the ground. High levels of sulfur dioxide were measured during the smog and linked to increased respiratory disease deaths. [3] The event highlighted the need for improved air pollution regulations in the UK and led to the Clean Air Acts of 1956 and 1968.
Methane
Methane is the simplest alkane and consists of one carbon atom bonded to four hydrogen atoms in a tetrahedral structure. It is a colorless, odorless gas that is nonpolar and has a low boiling point. Methane is produced from the anaerobic decomposition of organic matter and is the primary component of natural gas. It typically only reacts under vigorous conditions with substances like oxygen, halogens, or at high temperatures. When methane reacts with chlorine, it undergoes a substitution reaction where a chlorine replaces a hydrogen to form methyl chloride, in a chain reaction where reactive radicals continually form and react.
There's a Heifer in Your Tank
Students answer the question: If you car ran on methane, how far could you travel on the methane from one cow?
Which end of the cow does methane come out?
The majority of methane comes from the stomachs of cows. Bacteria in a cow's rumen produce methane as a byproduct of digestion. Researchers have developed methane collection devices that can be attached to cows to capture the methane as it is released, usually from the rear end. Reducing methane losses from cows could help increase their size by retaining more of the energy from their food.
EPA PowerPoint Presentation on Methane Migration in Dimock, PA Water Wells
A PowerPoint presentation supposedly obtained by the LA Times that concludes nearby Marcellus Shale drilling and fracking likely caused methane migration in some area residents' water wells. The presentation contains data that supposedly originates with the EPA, although the EPA is not referenced anywhere in the document, nor is the document attributed to the EPA (nor footnoted). Therefore, the source of the document is suspect unless/until the EPA confirms that this document originated from their offices.
Ozone layer depletion
This document discusses the ozone layer and ozone depletion. It begins by introducing the student's name and department. It then provides background on the ozone layer, noting that most ozone is found in the stratosphere between 19-30km, forming the ozone layer.
The document discusses the layers of the atmosphere and the roles of the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. It explains that the ozone layer in the stratosphere absorbs harmful UV rays from the sun. The document also covers causes of ozone depletion like CFCs, effects of ozone depletion like skin cancer, and international agreements to regulate ozone-depleting chemicals like the Montreal
cow methane project leif
Cows release significant amounts of methane daily, which contributes to global warming. A single cow produces approximately 214kg of methane per year, or 58g per day. Globally, the 1.3 billion cows release around 760 million kg of methane daily. Methane is a potent greenhouse gas that is 23 times more effective at trapping heat than carbon dioxide. While the methane from cows does not directly harm nearby animals, it does impact the environment by contributing to climate change. Some methods to reduce methane from cows include changing their diets or capturing methane from cow manure.
Is scr technology coming back to cement
This presentation questions whether SCR technology will become a sustainable NOx reduction technology for the cement industry
PA DEP: Methane Reduction Strategies for Natural Gas Operations
Onerous new regulations for the Pennsylvania Marcellus Shale industry proposed by the state Dept. of Environmental Protection. The new regs will, according to the DEP, help PA reduce so-called fugitive methane emissions and some types of air pollution (VOCs). This is liberal Gov. Tom Wolf's way of addressing mythical man-made global warming.
SOx and NOx Emissions Abatement, Technology and Experience
This document discusses technologies for reducing SOx and NOx emissions from ships. It notes that while the shipping industry has concerns about emissions reduction technology, the technologies are actually mature and have been used successfully since the 1930s on land. The document examines the various fuel and technology options available now and in the future for meeting emissions regulations. It acknowledges technical, regulatory, and contractual challenges but emphasizes that solutions need to be considered on a case-by-case basis depending on a ship's operations and finances.
Viewers also liked (20)
Ozone Layer Depletion, Greenhouse Effect & Global Warming
Ozone Layer Depletion, Greenhouse Effect & Global Warming
EPA PowerPoint Presentation on Methane Migration in Dimock, PA Water Wells
EPA PowerPoint Presentation on Methane Migration in Dimock, PA Water Wells
PA DEP: Methane Reduction Strategies for Natural Gas Operations
PA DEP: Methane Reduction Strategies for Natural Gas Operations
SOx and NOx Emissions Abatement, Technology and Experience
SOx and NOx Emissions Abatement, Technology and Experience
Similar to Destruction Of The Ozone Layer
Ozone depletion
The document discusses the ozone layer and its depletion. It begins by defining ozone and describing where it is located in the atmosphere, forming an important protective layer. It then explains that ozone depletion is primarily caused by chlorofluorocarbons and other ozone depleting substances released into the air. This leads to increased UV radiation reaching the Earth's surface and causes problems like skin cancer, as well as broader issues like global warming. International agreements like the Montreal Protocol have helped phase out the harmful substances and allow the ozone layer to recover over time.
Destruction of-the-ozone-layer-1234518350721384-3
The ozone layer absorbs most of the sun's harmful ultraviolet rays. It is being destroyed, forming a hole over Antarctica. Chlorofluorocarbons (CFCs) are the main cause of ozone depletion as they release chlorine atoms when exposed to sunlight, which break down ozone molecules. Reducing CFC use and phasing them out completely is needed to solve the problem long-term.
Ozone Depletion
The document discusses the importance of the ozone layer in protecting life on Earth from harmful UV rays. It explains that while the ozone layer formed naturally, human activities involving chemicals like CFCs are depleting it. The effects of ozone depletion include increased UV radiation at the surface. International agreements have sought to regulate emissions and find alternatives to ozone-depleting substances. The document also discusses the formation of ozone holes over the Arctic and Antarctic regions.
Ozone layer mary lam
Ozone is a molecule containing three oxygen atoms that exists in both the upper and lower atmosphere. In the stratosphere, ozone forms a layer that protects the Earth from UV radiation, but in the troposphere it is a air pollutant. The document discusses the formation of ozone, its roles in the atmosphere, and how CFCs were depleting the ozone layer until they were regulated by the Montreal Protocol.
Ozone
The document discusses ozone, including its types, properties, sources, effects, and threats like depletion of the ozone layer. It describes how stratospheric ozone protects life by absorbing UV radiation, while tropospheric ozone is a pollutant. The document also explains that chlorofluorocarbons deplete stratospheric ozone, causing seasonal ozone holes over Antarctica, and outlines the health and environmental impacts of ozone layer depletion and how to protect the ozone layer and ourselves from UV radiation.
Ozone depletion
Ozone exists naturally in two layers of the atmosphere. Ground-level ozone is a pollutant but the ozone layer in the stratosphere protects the Earth from harmful UV rays. The ozone layer was depleted by CFCs but this was addressed by the Montreal Protocol which phased out CFC production, allowing the ozone layer to recover over time. Continued monitoring is needed to understand impacts of ozone depletion and climate change.
Ozone layer
The document discusses the ozone layer, its importance in protecting Earth from UV radiation, and causes of its depletion. The ozone layer is a layer of gas in the stratosphere that contains ozone, which absorbs 97-99% of harmful UV radiation from the sun. Depletion of the ozone layer began in the 1970s due to man-made chemicals like CFCs released into the atmosphere. CFCs are stable but rise to the stratosphere where they break down ozone molecules. Depletion of the ozone layer increases risks of health issues like skin cancer from higher UV exposure at the surface. Actions to prevent further depletion include limiting CFC and halon emissions and developing alternatives.
Presentation (1)-1.pdf
The document discusses a presentation given on World Ozone Day about the ozone layer. It provides background on the ozone layer, noting that it protects life on Earth by absorbing 97-99% of harmful UV radiation from the sun. It then summarizes the five layers of the atmosphere, with an emphasis on the stratosphere where the ozone layer is located. The document outlines some of the main causes of ozone layer depletion including chlorofluorocarbons and other ozone depleting substances, as well as the harmful effects of depletion on human health, animals, plants, and marine life.
shubham.pptx for students gathering knowledge
This document discusses ozone depletion, including its definition, causes, impacts, and importance. It begins by defining ozone depletion as the reduction of ozone in the stratosphere, which is caused by chlorofluorocarbons (CFCs) from industries. This leads to released chlorine atoms that destroy ozone molecules. Impacts include increased skin cancer and crop damage. The maintenance of the ozone layer is vital to protecting life from harmful UV radiation. The document also provides a case study on ozone depletion in India from refrigerant use and the country's response.
Ozone layer & carbon cycle
The document summarizes information about the ozone layer and atmospheric cycles. It describes the ozone layer as a thin layer in the upper atmosphere that shields the Earth from harmful UV rays. It states that human activity, such as the release of chlorofluorocarbons (CFCs), accounts for around 85% of ozone depletion. CFCs were used in products like refrigerators and aerosols until their damaging effects on the ozone layer were discovered. The document also briefly discusses the carbon cycle and how it is being disrupted by increased CO2 levels from fossil fuel consumption and deforestation.
A power point presentation on ozone depletion
The document discusses ozone depletion and the ozone hole over Antarctica. It describes how ozone depletion occurs through a catalytic process caused by chlorine and bromine compounds released by CFCs and other chemicals in the stratosphere. Increased UV radiation due to ozone depletion can cause skin cancer in humans, damage plants and plankton populations, and affect climate patterns globally. The Montreal Protocol banned CFCs and other ozone depleting substances to address the problem.
Ozone depletion (preetamm iiserb)
1) The document discusses the ozone layer and the effects of ozone depletion on human health and the environment.
2) It describes how chlorofluorocarbons (CFCs) released chemicals that destroy the ozone layer, increasing UV radiation levels and potentially causing skin cancer, cataracts, and other negative impacts.
3) International agreements like the Montreal Protocol have sought to phase out CFCs and other ozone-depleting substances to allow the ozone layer to recover over time.
ozone layer.pdf
The document discusses the ozone layer, what ozone layer depletion is, its causes and effects. The ozone layer is a region in the stratosphere that protects the earth from UV radiation. Ozone layer depletion is the thinning of this layer caused by chemicals like CFCs releasing chlorine and bromine which destroy ozone. This exposes the earth to harmful UV rays and causes health issues in humans and damage to plants, animals and marine life. Solutions proposed are avoiding ozone depleting substances and using alternatives.
Ozone depletion by Dr Madhan S Bharadwaj.ppt
Ozone is the one and only layer to protect our earth from harmful UV radiation. There are a lot of initiatives taken by many countries to save the ozone layer. Ozone depletion is nowadays one of the hot topics in conferences and seminars. In this presentation, I have briefed on the cause and side effects of ozone depletion. The students from school to master's may take advantage of this presentation
Similar to Destruction Of The Ozone Layer (20)
Recently uploaded
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar KanvariaHindi varnamala | hindi alphabet PPT.pdf
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Aberdeen
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)Academy of Science of South Africa
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
How to Add Chatter in the odoo 17 ERP Module
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
How to Setup Warehouse & Location in Odoo 17 Inventory
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
Community pharmacy- Social and preventive pharmacy UNIT 5
Covered community pharmacy topic of the subject Social and preventive pharmacy for Diploma and Bachelor of pharmacy
The simplified electron and muon model, Oscillating Spacetime: The Foundation...
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
How to Make a Field Mandatory in Odoo 17
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
Recently uploaded (20)
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Community pharmacy- Social and preventive pharmacy UNIT 5
Community pharmacy- Social and preventive pharmacy UNIT 5
The simplified electron and muon model, Oscillating Spacetime: The Foundation...
The simplified electron and muon model, Oscillating Spacetime: The Foundation...
Pride Month Slides 2024 David Douglas School District
Pride Month Slides 2024 David Douglas School District
Destruction Of The Ozone Layer
- 1. Destruction of the Ozone Layer The ozone layer is a layer in Earth’s atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 93-99% of the sun's high frequency ultravioletlight, which is potentially damaging to life on earth.