Ppt on ozone depletion in australia

Climate Change and Ozone Loss G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 18 G. Tyler Miller’s Living in the Environment 13 th Edition.

weeks this typically destroys 40-50% of the ozone over Antarctica. When the vortex breaks up, ozone depleted air masses flow northward over Australia, New Zealand, and South America. This raises dangerous levels of UV in these areas Similar thing happens in Arctic winter. Seasonal Thinning at the Poles  Ozone thinning (hole)  Polar vortex Fig. 18-30 p. 475 Ozone Depleting Chemicals  Chlorofluorocarbons (CFCs)  Halons  Methyl bromide  Carbon tetrachloride/


APES year in review 2014: The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2013-14, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES – a year in review 2013, The year everyone gets a 5?

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review This is the year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2007, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2011, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2014, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2009, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


1 1 Environmental Science Air Pollution Global climate change Stratospheric ozone depletion Urban air pollution Acid deposition Outdoor pollutants Indoor.

climate change Stratospheric ozone depletion Urban air pollution Acid deposition Outdoor pollutants Indoor pollutants Noise Biodiversity Depletion Habitat destruction Habitat degradation Extinction Water Pollution Sediment Nutrient overload Toxic chemicals Infectious agents Oxygen depletion Pesticides Oil spills / moth, Cactoblastis cactorum (above), was used to wipe out invasive prickly pear cactus in Australia. But biocontrol is risky Most biocontrol agents are introduced from elsewhere. Some may turn/


APES year in review 2015, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review. Chapter 1: Introduction  Understand how natural world works  Understand how human systems interact with natural system  Accurately.

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2011, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2010, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2012, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2007, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


APES year in review 2007, The year everyone gets a 5!

) but significant rise in the global average temperature.  Analogy – Car on a sunny day The greenhouse effect is natural and important to deep the earth warm enough for life to exist Ozone (O 3 ) Stratospheric ozone is GOOD It shields us from the harmful UVB rays of the sun. Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia story) Analogy/


Chapter 19 Adam Brooks. 19-1 How Might the Earths Temperature and Climate Change in the Future.

increased temperatures exceeds precipitation for a long period of time. Southern Australia has experienced a severe drought for a decade, and the western United States is experiencing its worst drought in 500 years. A 2007 study by climate researchers at NASAs Goddard / the suns harmful ultraviolet radiation is kept from reaching the earths surface by a layer of ozone in the lower stratosphere. The ozone depletion in the stratosphere is a serious threat to humans, animals and plants that use the sunlight to/


1. Ozone in the stratosphere A.Is a harmful air pollutant B.Helps protect the Earth by blocking harmful UV radiation C.Neither A nor B.

more consistently. There isn’t as much regional variation in air pressure (and therefore winds) due to differential heating as in the Northern Hemisphere. Southern HemisphereNorthern Hemisphere 10. When traveling to Australia, Argentina or other places near the South Pole, it is most important to slather on a thick layer of sunscreen due to ozone depletion during which months? A.July and August (their Winter/


To what extent can climate change in Australia be linked to human activity? Prepared by: Taher Nematollahi.

____________________  What is the greenhouse effect  Climate change causes  Greenhouse emissions in AustraliaAustralia’s climate change policy options  Recommendation Whats the relationship between following subjects? /greenhouse gases such as:  water vapor  carbon dioxide  methane  nitrous oxide  Ozone  CFC Climate change is originated from:  Increase in co2 concentration  Ozone Depletion  Deforestation  Methane and Nitrous oxide emissions from agriculture and factories  Water Vapor  /


Climate Climate is the average weather conditions in an area over a long period of time. Climate is determined by a variety of factors that include latitude,

, parts of the CFC molecules destroy the protective ozone. Chemicals That Cause Ozone Depletion Each CFC molecule contains from one to four chlorine atoms, and scientists have estimated that a single chlorine atom in the CFC structure can destroy 100,000 ozone molecule. Chemicals That Cause Ozone Depletion The Ozone Hole In 1985, studies by scientists working in Antarctica revealed that the ozone layer above the South Pole had thinned by/


Chapter 19 part B. Permafrost Is Likely to Melt: Another Dangerous Scenario Carbon present as CH 4 in permafrost soils and lake bottoms 2004: Arctic Climate.

little reduction. Hope China, Brazil, India and Indonesia will join program in second phase of program US and Australia did not sign. Some Governments Are Leading the Way Costa Rica: goal/Ozone Layer Ozone Thinning – Seasonal depletion in the stratosphere Antarctica and Arctic 1930: Midgely – Discovered the first CFC 1984: Rowland and Molina – CFCs were depleting O 3 Other ozone-depleting chemicals Global Average Total Ozone Values in the Stratosphere from 1979–2005 Why Should We Worry about Ozone Depletion/


HARC Meeting June 11, 2012 Las Vegas, Nevada. Climate Change - International Durban Platform for Enhanced Action Adopted at COP 17 in November 2011 Negotiations.

emissions trading scheme International linking to credible markets and emission trading schemes as of 2015 Climate Change - Australia Australia Carbon Tax Carbon tax does not directly cover HFCs Equivalent carbon price applied to HFCs under existing legislation / the exception of aircraft cargo bays, fire extinguishing agent alternatives to ODS, in the form of non-ozone depleting gases, gas- powder blends, powders and other not-in-kind technologies (i.e., non-gaseous agents) are now available for virtually/


Physical Science Basis of Climate Change: IPCC 2007 Emilia K. Jin Center of Ocean-Land- Atmosphere studies Feb 12, 2008 CLIM 759: Topics in Climate Dynamics.

flask samples are shown from Alert, Canada (82°N, pink) and Cape Grim, Australia (41°S, cyan) (Manning and Keeling, 2006). Increases in global atmospheric CO2 since the industrial revolution are 1) mainly due to CO2 emissions from the/(both tropospheric and stratospheric). While the TAR simulations did not consider changes in ozone within the troposphere caused by reduced influx of ozone from the stratosphere (due to ozone depletion in the stratosphere), the new models include this process (Gauss et al., /


IVb/1 IV. Stratospheric ozone chemistry 1.Basic concepts of atmospheric chemistry 2.Ozone chemistry and ozone distribution 3.Sources and distribution of.

nm) is dependent on the ozone column Lauder, Australia IVb/3 Controlling stratospheric chlorine and excess skin cancer Ozone trends forms the basis for policy making  Montreal protocol and adjustments WMO 2002 IVb/4 Ozone trends Trends in total ozone,  total ozone data from satellites and groundbased data  ‚Scientific assessment of ozone depletion‘, WMO, 2002 global NH midlatitude IVb/5 Ozone trends trends in vertical distribution of ozone  Largest trends near 40/


Greenhouse Effect Sun heats the Earth Heat gets caught in the layer of CO 2 and H 2 O vapor, continues to warm things up.

and bromine gases have ↑ due to the use of chlorofluorocarbons (CFCs) for aerosols, refrigerants, cleaning solvents and fire extinguishers Ozone Hole Ozone hole –Occasionally affects Australia and New Zealand –Decline in stratospheric temp. b/c when ozone absorbs UV radiation it is transformed into heat energy Ozone depletion When CFCs escape into the stratosphere, and when UV radiation frees Cl and Br atoms, these unstable atoms breakdown/


Climate Change and Ozone Loss Chapter 18

we can prepare for possible global warming. What were the results of the 1992 Earth Summit and the Kyoto Protocol? Ozone Depletion in the Stratosphere Ozone (O3) keeps 95% UV radiation which Allows human and other life forms to exist on Earth Protects humans from /air Allows it to begin mixing again Then new ozone forms until next winter When the vortex breaks up Huge masses of depleted air above Antarctica flow northward and linger for a few weeks over Australia, New Zealand, South America, and South Africa/


Air Pollution, Climate Change and Ozone Depletion

and Ozone Depletion CLIMATE/ up mostly of nitrogen and oxygen, with smaller amounts of water vapor and CO2. Ozone in the atmosphere’s second layer (stratosphere) filters out most of the sun’s UV /in the Pacific Warmer and wetter in the western Americas from So. Cal south (Warmer and dryer in the Northwest US during winter and warmer and wetter in the summer) Suppresses hurricane activity in the Atlantic ocean Major declining in fishing populations during an El Nino Drought in the western Pacific and Australia/


Badlands National Park, SD

of CFC role 1977: 1st meeting on O3 depletion 1978: US bans nonessential CFC aerosols 1985: Vienna Convention 1987: Montreal Protocol 1991: Phase out CFCs by 1996 US, Europe 2000: Maximum CFC in stratosphere 2010: End CFC use worldwide 1987: measuring ozone Ozone Levels In troposphere Limit value: In stratosphere: 110 µg/m3 for 8-hour-average concentrations In stratosphere: Over US: ~ 300 DU Over Antarctica: ~ 117/


PACON 2010 Pacific Congress on Marine Science & Technology (PACON) 22nd International Conference International Partnerships in Marine Science and Technology:

lose weight, whales move north, whales wiped out, wheat yields crushed in Australia, wildfires, wind shift, wind reduced, winds stronger, winds weaker, wine/in IndiaNorthwest Passage openednuclear plants bloomoaks dyingoaks move northoblivionocean acidificationocean acidification fasterocean dead spotsocean dead zones unleashedocean deserts expandocean salt extremesocean waves speed upOlympic Games to endopera house to be destroyedoutdoor hockey threatenedoxygen depletion zones ozone repair slowed,ozone/


Canada. A land of _____ distances and rich natural resources, Canada became a self-governing _____ in 1867 while retaining ______ to the British crown.

of the country. (7) (8)a) peoples b) residings c) residents d) inhabitant (8) Australia Australia became a _____ of the British Empire in 1901. It was able to take advantage _____ its natural resources to rapidly develop its agricultural and manufacturing industries/to make a major contribution to the British _____ in World Wars I and II. (1) (3)a) siege b) game c) effort d) trial (2) (3) Long-term concerns _____ pollution, particularly depletion of the ozone layer, and management and _____ of coastal areas,/


Atmospheric Chemistry –Formation of the Atmosphere –The Early Atmosphere –Origin of Life and Oxygen –Ozone –Air Pollution –Acid Rain –Greenhouse Effect.

.5 Latitude63 o S73 o S Thickness of Ozone Layer The thickness of the Ozone Layer is expressed in Dobson units (DU) and is equivalent to 0.001 mm thickness of pure O 3 at the density it would possess at ground level (1 atm) Equator = 250 DU Temperate Latitudes = 350 DU Subpolar regions = 450DU Other Ozone Depleters But has the reduction and removal of/


D a v i d d. h e r r i n ga u g u s t 2 5, 2 0 0 2 1  Pioneers in the study of atmospheric motions  Pioneers in the study of cooling and warming influences.

& Depletion Chlorine reacts with ozone, forming chlorine monoxide & oxygen. Chlorine monoxide reacts with oxygen to free up the original chlorine atom to further destroy ozone, setting up a vicious cycle.  Chlorine monoxide (left) and ozone concentration (right) derived by MLS at approximately 18 km altitude on August 27, 1997, and October 10, 1997, respectively. The high chlorine monoxide within the Antarctic polar vortex in the/


Climate Change, Global Warming and Stratospheric Ozone.

smaller amounts – BUT - it causes 50 times more destruction to the ozone than a Chlorine atom.  Bromine is found in Halon – which is used in fire extinguishers and Methyl Bromide used in agriculture.  Methyl Bromide is also released by biomass burning. Effects of Ozone Depletion  A thinning of the ozone layer, the size of Australia, has developed in the Stratosphere above the South Pole and more recently the North/


Climate Control and Ozone Depletion

’s harmful UV-rays (UV-A, UV-B) from hitting the Earth Ozone Thinning (Ozone Hole): 40-50% seasonal depletion in the stratosphere in Antarctica and Arctic (some up to 100%); thinning in other regions except the tropics; worst between 2010-2019 When the seasonal thinning ends, huge masses of ozone move and they linger over Australia, New Zealand, Africa and South America; increasing UV-B levels by/


Large Scale Human Impacts As the human population is rapidly increases, humans are creating larger environmental changes. Two major concerns are: – Ozone.

a = least harmful Ozone Depletion – Since the 1970’s scientists have been finding evidence that the ozone layer was thinning Holes in the ozone layer were eventually found above both poles – Ozone holes caused by CFCs (chlorofluorocarbons) which break down ozone molecules Ozone cont… Destruction of the ozone layer has increased the /.1 European Union 127.8 Russia 68.4 Ukraine 21.7 Poland 14.4 China 57.6 Japan 31.2 Australia 7.6 India 15.5 Kazakhstan 10.1 South Africa 8.5 Canada 14.9 Mexico 7.8 Trinidad and /


Recall – quick questions 1.In which 2 layers of the atmosphere is ozone found? 2.Where is it considered “good” and “bad”? Why? 3.What happens to the structure.

in the breakdown of ozone by CFCs. 3.Describe how ozone is formed. 4.Marco was talking to Eugenio, “It is the hole in the ozone layer that is allowing heat from the sun to enter the atmosphere.” Comment on this statement. 5.Where is ozone found? Reducing ozone depleting/ Capture CFCs from scrap cars (found in the cooling systems) Since 1993 Australia has collected 3000 tonnes of ODSs which have been either recycled, stored or destroyed. Restore - clean-up Add ozone to or remove chlorine / bromine from/


1 Chapter 13 Human Impacts on Natural Systems Climates and biomas: global warming, acid rain, and ozone Abuses of land and vegetation: deforestation, desertification,

,000 lakes totally dead to fish life and another 15,000 in danger (13.9) 7 Ozone Depletion Ozone in troposphere block UV reaching earth, destruction in higher atmosphere will cause DNA and other skin cancers. 1986, ozone hole was found in Antarctica. (occur in late August and October), Hole spread to S America and Australia. Mostly from CFC (winter in Antarctic lack of sunlight, CFC destroying O3 easily 1987 Montreal/


Globally, 12% of birds, 21% of mammals, and 32% of amphibians are threatened with extinction More than 50% of wetlands in the contiguous United States.

Antarctica and southern Australia, New Zealand, and South America Ozone levels have decreased 2–10% at mid- latitudes during the past 20 years © 2011 Pearson Education, Inc. Figure 56.31 September 1979September 2009 Figure 56.31a September 1979 Figure 56.31b September 2009 Ozone depletion causes DNA damage in plants and poorer phytoplankton growth An international agreement signed in 1987 has resulted in a decrease in ozone depletion © 2011 Pearson/


45-1 Copyright  2010 McGraw-Hill Australia Pty Ltd PowerPoint slides to accompany Biology: An Australian focus 4e by Knox, Ladiges, Evans and Saint Slides.

above earth Shields earth from destructive UV radiation Constantly created by action of sun on oxygen Depleted by natural and man-made constituents in the air, e.g. chlorofluorocarbons (CFCs) When rate of destruction of ozone > rate of formation, ‘hole’ forms 45-26 Copyright  2010 McGraw-Hill Australia Pty Ltd PowerPoint slides to accompany Biology: An Australian focus 4e by Knox, Ladiges, Evans and/


AP Environmental Science Review. Easter Island Sustainability - A system/process can continue indefinitely without depleting resources used. *no sacrifice.

and evaporation Secondary – when primary pollutants undergo further reactions in atmosphere 1.Suspended particulate matter (primary) 2.Volatile /Ozone depletion – Chemicals released from the surface of the earth destroy our ozone shield. – No stratospheric ozone, no protection from the UV rays of the sun. Ozone (O 3 ) Stratospheric ozone is GOOD – It shields us from the harmful UVB rays of the sun. – Ozone depletion is the thinning of the stratospheric ozone shield (mostly over the South Pole, Australia/


Ozone!. I. Ozone Basics A.Ozone is O 3 B.Found in the stratosphere in concentrations of about 400 ppb (parts per billion). C.Three types of UV light come.

air mass travels over Australia and New Zealand, raising UV- B levels between 10 and 20%. III. The Ozone Holes D. Montreal Protocol (1987) = 180 nations agreed to cut CFC production in half 1) Follow-up agreements (Copenhagen 1992) deepened cuts, advanced timetables and addresses other ozone-depleting chemicals 2) Today, production and use of ozone-depleting chemicals has decreased 95% 3) The ozone layer is beginning to/


CHAPTER 6 HUMANS IN THE BIOSPHERE. SECTION 1 A CHANGING LANDSCAPE.

can come from fertilizers and pesticides used in agriculture, livestock farms, industrial waste, oil/ species. –Burmese python (Florida Everglades) –mice (Australia) –kudzu (southeastern United States) Conservation practices focus /depletion, of the ozone layer Global warming Oxygen = O2 Ozone = O3 OZONE LAYER between 20 and 50 kilometers above the Earth’s surface, the atmosphere contains a concentration of ozone gas Absorbs UV radiation before sunlight hits Earth Visual Concept: Ozone and Ecosystems Ozone/


The Sleeping Dragon: China’s Role in Climate Change as a Developing Country Stephen Janasie Aakruti Shah Stephen Janasie:

diseases is the second leading cause of death in China. Acid rain affects about 30% of China, and China contributes to over half of the acid rainfall in Japan and 80% in South Korea. Ozone Depletion In the Montreal Protocol, there was a 10/ the EU agreed on very specific numerical limits on sinks to induce Japan, Canada, Australia, and Russia to agree. “Hot-Air” Problem Developed countries with economies in transition were supposed to reach 1990 levels of emissions, however, since these countries faced /


P1h(ii) Stable Earth You will learn about: Ultraviolet radiation and how to avoid its harmful effects The ozone layer and how it is monitored www.PhysicsGCSE.co.uk.

around the world helped to make scientists realise the truth – the ozone layer was depleting. www.PhysicsGCSE.co.uk NASA satellites record each year the amount of ozone in the stratosphere. It is clear it is thinner in the central part of each image – this is over Australia and the South Pole. Fortunately, the ozone layer is thickening but it will take several more decades before it/


1 Mark Ewoldsen, Ph.D. Advanced Placement Environmental Science Teacher La Cañada High School Ozone Hole.

airliners (33000 ft) 3 4 Stratospheric Ozone (Good)vs. Tropospheric Ozone (Bad) 5 Ozone – Two Faces Stratosphere – Good Ozone –Blocks UV radiation –Hole caused by depletion due to CFC’s Troposphere – Bad Ozone –Pollution Photochemical smog Eye irritant 6 Harmful/ animals Reduction in the growth of ocean phytoplankton Degradation of paints, plastics, tires http://www.peakoilproof.com/2011/04/etf-spotlight-australia-ewa.html 12 Good Ozone Most ionizing Natural Ozone Hole Winter = no sunlight Air in the polar /


Global Climate Change. Questions of the day: o 1. What is the greenhouse effect? Is it natural or human caused? o 2. Did ozone depletion cause g.c.c?

burning o CH4- methane-unburned gas, anaerobic activity in landfills, intestines of cattle and man o Nox- nitrogen oxides, from burning and troposphere O3 o CFC’s- trap heat and cause ozone depletion o Aerosols and suspended particles- actually cool atmosphere, / greenhouse gases Provides operational rules on reducing greenhouse gases US and Australia have not sign it- it will be difficult to implement without US backing US and Australia have not sign it- it will be difficult to implement without/


Topic 5.2 / Option G.3 Human Impact on Ecosystems 2 Invasive species, Biomagnification and the Ozone layer Assessment Statements: G.3.4 – G.3.11.

controlled through the introduction of a chinese wasp. Gone wrong The cane toad was introduced in australia to control the cane beetle. The toad also eats native insects, and competes and spreads disease to native reptiles and amphibians/ webs. The exact effects are not known, but it is likely they will be damaged. How to help stop ozone depletion CFCs were banned in many countries and chemical companies are using alternatives to refrigerants and aerosols. Refrigerants may be recycled rather than dumped or /


Chapter 11 Effect of Life on the Atmosphere: The Rise of Oxygen and Ozone.

origin of the earth and life (chapter 10) and the rise of oxygen and ozone (chapter 11) are highly speculative. How did organisms affect oxygen, methane, nitrogen/ survive? Stromatolites – 3.5 b.y. old (?), fossil remains of bacteria today found in shallow-salty environment in Western Australia. Layers  sunlight and that they can photosynthesize! But produce O 2 ? Not necessarily/C to 12 C – definition: CH 4 produced by methanogens is depleted in 13 C in relation to 12 C so the their ration can be used as /


Department of Defense Ozone Depleting Substances Reserve.

Solvents War Stoppers The DoD Ozone Depleting Substances Reserve Background Montreal Protocol - 1987 - International Agreement to Phase Out Production of ODS –Halons and Refrigerants Contain Bromine and Chlorine that Deplete Ozone Layer Manufacture Ceased - / Storage/Operations Site- Richmond – Issues, Receipts and Turn Ins Security Sites – Long-Term Storage –Naval Weapons Station Yorktown, VA –Defense Depot San Joaquin, CA –Australia – 2 Sites Collection/Consolidation –Germany/Netherlands –Pearl Harbor /


Ads by Google