environmental concerns. air pollution pollutants in the atmosphere contribute to global warming and...

EnvironmentalEnvironmentalConcernsConcerns

Air PollutionAir Pollution

Pollutants in Pollutants in the atmospherethe atmosphere Contribute to Contribute to

global warming global warming and ozone and ozone layer depletionlayer depletion

Water PollutionWater Pollution Contamination Contamination

by foreign by foreign matter that matter that deteriorates deteriorates the quality of the quality of the water the water Can limit Can limit

access to access to clean drinking clean drinking water, spread water, spread disease, kill disease, kill plant and plant and animal life animal life which affects which affects food chainfood chain

Soil / Land PollutionSoil / Land Pollution

Solid and Solid and liquid wastes, liquid wastes, toxins in soiltoxins in soil Chemicals Chemicals

can seep into can seep into soil, then into soil, then into food and food and water water suppliessupplies

Global WarmingGlobal Warming Excessive warming of Excessive warming of

the earth’s surface by the earth’s surface by the the greenhouse effect greenhouse effect that results in a that results in a change in climatechange in climate Process occurs Process occurs

naturally due to naturally due to certain gases in the certain gases in the atmosphereatmosphere

Life on earth would Life on earth would not be possible not be possible without itwithout it

Global warming – increases in Global warming – increases in gases and temperatures to gases and temperatures to dangerous levelsdangerous levels

Human Impact on Greenhouse GasesHuman Impact on Greenhouse Gases

Global Warming - ReasonsGlobal Warming - Reasons Carbon dioxide gases released into Carbon dioxide gases released into

environmentenvironment Due to massive amounts of Due to massive amounts of non-renewable non-renewable

fossil fuelsfossil fuels being burned by humans, being burned by humans, including:including:• CoalCoal• OilOil• Natural gasNatural gas

Non-renewable resources - Non-renewable resources - cannot be created over again and cannot be created over again and our supply of them is limited; once our supply of them is limited; once they run out, the resource is gone they run out, the resource is gone forever.forever.

Global WarmingGlobal Warming

Some naturally occurring contributors to Some naturally occurring contributors to global warmingglobal warming: : volcanic eruptions & meteor volcanic eruptions & meteor

impactsimpacts

Global Warming ImpactsGlobal Warming Impacts

Effects / Results of Global WarmingEffects / Results of Global Warming Rising incidence of violent storms Rising incidence of violent storms

North American Hurricane Season 2005North American Hurricane Season 2005

Effects / Results of Global WarmingEffects / Results of Global Warming

Rising incidence of heat waves (Europe Rising incidence of heat waves (Europe 2003)2003)


Above average temperatures melting Above average temperatures melting glaciers and sea levels are rising as a glaciers and sea levels are rising as a resultresult


Rising Sea LevelsRising Sea Levels


Diseases are extending their ranges Diseases are extending their ranges because of warmer temperaturesbecause of warmer temperatures Many diseases, especially those in water, Many diseases, especially those in water,

reproduce more rapidly in warmer weatherreproduce more rapidly in warmer weather


Earlier arrival of spring in some parts of Earlier arrival of spring in some parts of the world – impacting global agricultural the world – impacting global agricultural patternspatterns

Effects / Results of Global WarmingEffects / Results of Global Warming As permafrost melts, Arctic communities As permafrost melts, Arctic communities

lose valuable shorelinelose valuable shoreline


Polar bears to starving because they Polar bears to starving because they cannot use the ice to hunt sealscannot use the ice to hunt seals

Now on Now on

endangered endangered

species listspecies list


Canada’s Canada’s Arctic regions Arctic regions – sea ice – sea ice shrinkingshrinking Causes Causes

sinking sinking shorelines shorelines and death of and death of some Arctic some Arctic animalsanimals

Global Warming in CanadaGlobal Warming in Canada

Effects / Results of Global WarmingEffects / Results of Global Warming In BC – increasing water temperatures In BC – increasing water temperatures

have contributed to salmon spawning have contributed to salmon spawning numbers being 1/3 of what they were in numbers being 1/3 of what they were in 1990s1990s

Effects / Results of Global WarmingEffects / Results of Global Warming While warmer temperatures could While warmer temperatures could

lengthen Canada’s short growing season – lengthen Canada’s short growing season – also higher risk of drought and forest firesalso higher risk of drought and forest fires

Effects / Results of Global WarmingEffects / Results of Global Warming Warmer weather causes increasing Warmer weather causes increasing

numbers of forest fires and more droughts numbers of forest fires and more droughts in Canada’s prairie areasin Canada’s prairie areas


Canada’s oceansCanada’s oceans Increasing surface Increasing surface

water temperatures, water temperatures, fewer nutrients are fewer nutrients are brought to the surface brought to the surface by the movement of by the movement of colder water from deep colder water from deep in the oceanin the ocean

Nutrients support and Nutrients support and maintain zooplankton – maintain zooplankton – beginning of the food beginning of the food chain of sea lifechain of sea life

Kyoto Protocol - 1997Kyoto Protocol - 1997 Agreement among 180 Agreement among 180

industrialized nations to industrialized nations to reduce greenhouse gas reduce greenhouse gas emissionsemissions

Canada promised to Canada promised to reduce greenhouse gas reduce greenhouse gas emissions by 6% of the emissions by 6% of the 1990 level by 20121990 level by 2012

Countries not meeting Countries not meeting their reduction targets their reduction targets could buy credits from could buy credits from other countriesother countries

USA withdrew in 2001USA withdrew in 2001

Arguments against KyotoArguments against Kyoto Concerned that meeting Concerned that meeting

goals will involve high goals will involve high costs to businesses and costs to businesses and government and possible government and possible loss of jobsloss of jobs

Provincial governments Provincial governments must regulate polluting must regulate polluting industries despite the fact industries despite the fact that the federal that the federal government signed the government signed the agreement without agreement without consulting the provincesconsulting the provinces

Some argue not enough Some argue not enough evidence that global evidence that global warming to blame for warming to blame for climate changeclimate change

Kyoto & CanadaKyoto & Canada

2006 - Canada's 2006 - Canada's greenhouse gas greenhouse gas emissions were up emissions were up by 24% by 24%

far from the far from the government's government's commitment to meet commitment to meet a target 6% below a target 6% below the 1990 levelsthe 1990 levels

Kyoto & CanadaKyoto & Canada Election of a Conservative Election of a Conservative

government in 2006 brought government in 2006 brought about a reversal in Canada's about a reversal in Canada's climate change policyclimate change policy

2007 –2007 – Government Government announced plans to announced plans to introduce legislation that introduce legislation that would regulate industrial would regulate industrial pollutants as part of the pollutants as part of the Conservatives' proposed Conservatives' proposed Clean Air ActClean Air Act, to take effect , to take effect in January 2010. in January 2010.

said Canada will not attempt said Canada will not attempt to meet Kyoto's greenhouse to meet Kyoto's greenhouse gas targetsgas targets

Possible Solutions – Possible Solutions – Renewable Energy ResourcesRenewable Energy Resources

Sustainable Sustainable sources of sources of energy could energy could lessen lessen dependence on dependence on fossil fuels, such fossil fuels, such as:as: Wind TurbinesWind Turbines

http://www.youtube.com/watch?v=Hg9fiDUroo4

Wind PowerWind Power

Solutions - Solar Power PanelsSolutions - Solar Power Panels

http://www.youtube.com/watch?v=iG7FNcw7a5c&feature=related

http://www.youtube.com/watch?v=0hCggdtEU-M&feature=related

Solutions – Tidal PowerSolutions – Tidal Power

http://www.youtube.com/watch?v=qRUl1mJQHmc&feature=related

http://www.youtube.com/watch?v=F0mzrbfzUpM&feature=related

http://www.youtube.com/watch?v=VamSAbwgJKk&feature=related

http://www.youtube.com/watch?v=tSBACzRE3Gw&feature=related

Solutions – Ground Source EnergySolutions – Ground Source Energy

http://www.youtube.com/watch?v=kUvdNrOD4PY

http://www.youtube.com/watch?v=lD82e5RYfW8&feature=related

Solutions – BiofuelsSolutions – Biofuels Ethanol – some made from CornEthanol – some made from Corn

Ethanol – ConcernsEthanol – Concerns

o Ethanol – while reduces levels of carbon monoxide and other toxic air pollutants, corn-based ethanol production is energy intensive, and in some instances uses nearly as much energy to produce (including the energy needed for farming and making fertilizers) than it supplies, although new technologies are improving the efficiency of production.

http://www.youtube.com/watch?v=j9QQcP_Y1IIhttp://www.youtube.com/watch?v=8R012X3tU6Y&feature=related

Biofuels – instead of gasolineBiofuels – instead of gasoline

http://www.youtube.com/watch?v=WRB5VQMb5RI

Geothermal EnergyGeothermal Energy

Heat from the ground harvestedHeat from the ground harvested

Alternatives to Limit Fossil Fuel Use Alternatives to Limit Fossil Fuel Use

Hydrogen or methanol fuelled power cells Hydrogen or methanol fuelled power cells for automobilesfor automobiles

Alternatives to Limit Fossil Fuel UseAlternatives to Limit Fossil Fuel Use

Reduce, re-use, recycleReduce, re-use, recycle

Alternatives to Limit Fossil Fuel UseAlternatives to Limit Fossil Fuel Use

Carpool, use public transportation, ride Carpool, use public transportation, ride bicycle or walkbicycle or walk

Ozone DepletionOzone Depletion

Ozone layer – Ozone layer – region of the region of the atmosphere atmosphere containing containing relatively high relatively high concentrations of concentrations of ozone – approx ozone – approx 19-48km above 19-48km above the Earth’s surfacethe Earth’s surface

http://www.youtube.com/watch?v=SSycyCuQmUA&feature=related

Ozone DepletionOzone Depletion

Ozone is formed Ozone is formed by the action of by the action of solar ultraviolet solar ultraviolet light on oxygenlight on oxygen

It’s the only gas It’s the only gas able to block out able to block out the ultraviolet the ultraviolet rays from the sunrays from the sun

http://www.youtube.com/watch?v=e9fqpnkiUi0&feature=related

Ozone - DamageOzone - Damage Chlorofluorocarbons (CFCs)Chlorofluorocarbons (CFCs)

Have done 80% of the damage to the Ozone Have done 80% of the damage to the Ozone Layer (creating “holes”)Layer (creating “holes”)

Widely used in coolants for refrigerators and Widely used in coolants for refrigerators and air conditioners, solvents, and aerosol cansair conditioners, solvents, and aerosol cans

Results of Ozone DepletionResults of Ozone Depletion


Higher incidences of skin cancerHigher incidences of skin cancer


Reduction of microscopic marine life like Reduction of microscopic marine life like phytoplankton which will impact the food phytoplankton which will impact the food chainchain


Mutations of genetic structure of plants Mutations of genetic structure of plants and animalsand animals


Reduces rate Reduces rate of of photosynthesis photosynthesis in plants in plants (lowers energy (lowers energy output of output of producers)producers)

Possible Responses to Ozone DepletionPossible Responses to Ozone Depletion

Montreal Protocol Montreal Protocol – 1987– 1987 Agreement Agreement

between all between all industrial nations industrial nations to cut use of to cut use of CFCs in an effort CFCs in an effort to eliminate these to eliminate these chemicals by chemicals by 20002000

http://www.youtube.com/watch?v=Dn3KvZ_Xyqs&feature=related


Avoid using plastic foam packaging and Avoid using plastic foam packaging and goods that use CFCs (some aerosol cans)goods that use CFCs (some aerosol cans)


Dispose of old Dispose of old refrigerators, refrigerators, freezers, and freezers, and air air conditioners conditioners safelysafely

Fresh Water SuppliesFresh Water Supplies 70% of Earth’s Surface – covered by water70% of Earth’s Surface – covered by water However- most not readily accessible for However- most not readily accessible for

human usehuman use

Fresh WaterFresh Water

Water stored in:Water stored in: SoilSoil Aquifers Aquifers

(Ground water)(Ground water) LakesLakes RiversRivers streamsstreams

Fresh WaterFresh Water Only 3% fresh water – 78% of which is Only 3% fresh water – 78% of which is

stored in ice caps and glaciersstored in ice caps and glaciers Canada has 18% of all surface fresh water Canada has 18% of all surface fresh water

on Earthon Earth Large Large

portion ofportion of

this in this in

Great LakesGreat Lakes

Threats to Water Quality and Threats to Water Quality and Supply in CanadaSupply in Canada

ContaminationContamination Oil tanker accidentsOil tanker accidents Natural causesNatural causes Dumping of wasteDumping of waste


ContaminationContamination Agricultural Agricultural

• Chemicals used in herbicides / pesticidesChemicals used in herbicides / pesticides• Can seep into nearby streams and ground waterCan seep into nearby streams and ground water


ContaminationContamination Industrial Industrial

• By-products of production in oil refineries, pulp By-products of production in oil refineries, pulp mills, nuclear reactors, and chemical factoriesmills, nuclear reactors, and chemical factories


ContaminationContamination MunicipalMunicipal

• Raw sewage, detergents, and solventsRaw sewage, detergents, and solvents


MisuseMisuse 67% of accessible 67% of accessible

surface water is surface water is used by agricultureused by agriculture

When farmers till When farmers till land – lose moisture land – lose moisture – so land is – so land is irrigated irrigated – watered by – watered by artificial meansartificial means


MisuseMisuse 19% fresh water used for industry19% fresh water used for industry 9% for municipal / residential services9% for municipal / residential services


Groundwater Groundwater DepletionDepletion Over pumping of Over pumping of

aquifers aquifers (underground layer (underground layer of water-of water-permeable rock) permeable rock) which replenish which replenish slowly reduces the slowly reduces the water table (top of water table (top of saturated layer of saturated layer of porous rock – porous rock – ground water)ground water)


Groundwater DepletionGroundwater Depletion Digging deeper wells which could potentially Digging deeper wells which could potentially

tap harmful minerals like arsenic and fluoridetap harmful minerals like arsenic and fluoride


Water ExportsWater Exports The transfer water over long distancesThe transfer water over long distances Example: California would like to buy BC water; Example: California would like to buy BC water;

however, this could influence water table levels in BChowever, this could influence water table levels in BC


Increasing PopulationsIncreasing Populations Main threat to world’s freshwater supply’s Main threat to world’s freshwater supply’s

shortages threaten world agricultural shortages threaten world agricultural production as the amount to irrigated land has production as the amount to irrigated land has more than doubled in the 2more than doubled in the 2ndnd half of the 20 half of the 20ththCC

Possible Solutions to Water Supply ThreatsPossible Solutions to Water Supply Threats

Treatment technologies (Water Treatment Treatment technologies (Water Treatment Plants)Plants)


Desalination of sea water (remove salt)Desalination of sea water (remove salt)


Reclaimed or recycled water technologiesReclaimed or recycled water technologies Rainwater harvestingRainwater harvesting


ConservationConservation Low energy sprinkler systems and Low energy sprinkler systems and

washing machineswashing machines Low flush toilets and other small-scale Low flush toilets and other small-scale

supply systemssupply systems Water Management technologyWater Management technology


Farmers change watering schedules to Farmers change watering schedules to coincide with seasonal rainscoincide with seasonal rains

Shallow wells or use new technology / Shallow wells or use new technology / techniques in well drilling so farmers are techniques in well drilling so farmers are able to tap groundwater in aquifers able to tap groundwater in aquifers

Drip irrigation Drip irrigation

which directs which directs

water to plant rootswater to plant roots


Micro-dams rather than large-scale Micro-dams rather than large-scale projects that cause major harm to the projects that cause major harm to the environmentenvironment

Government regulationsGovernment regulations

Taxes or user rates Taxes or user rates could be introduced to could be introduced to encourage encourage conservationconservation

Set watering patterns Set watering patterns within municipalities within municipalities

Acid RainAcid Rain Precipitation Precipitation

(rain, snow, hail, (rain, snow, hail, or fog) with a or fog) with a pH level of less pH level of less then 5.6then 5.6

Caused by Caused by heavy industrial heavy industrial activity with activity with acids like acids like sulphur dioxide, sulphur dioxide, nitrogen oxide, nitrogen oxide, and burning and burning fossil fuelsfossil fuels

Acid RainAcid Rain

Can poison plant life Can poison plant life and wildlife of an areaand wildlife of an area

Cause genetic Cause genetic mutationsmutations

Decrease growth rates Decrease growth rates of treesof trees

Corrode steelCorrode steel Affect lung capacity in Affect lung capacity in

humanshumans Especially predominant Especially predominant

in Great Lakes areain Great Lakes area

Acid Rain - ResponseAcid Rain - Response

Canada- United States Canada- United States Air Quality Air Quality AgreementAgreement signed by Canada and the signed by Canada and the US in Ottawa - 1991 US in Ottawa - 1991

addresses transboundary air pollution addresses transboundary air pollution leading to acid rain leading to acid rain

DeforestationDeforestation


The permanent loss of old growth forestsThe permanent loss of old growth forests Has a drastic effect on the forests of the worldHas a drastic effect on the forests of the world Important to the recycling of carbon dioxide, and Important to the recycling of carbon dioxide, and

the release of oxygen into the atmospherethe release of oxygen into the atmosphere Leads to more Leads to more

global warmingglobal warming Survival of someSurvival of some

species threatenedspecies threatened


Brazilian RainforestBrazilian Rainforest Develop rainforest Develop rainforest

through farming, through farming, cattle ranching, cattle ranching, mining, and mining, and lumberinglumbering

Often no reforestation Often no reforestation occurs and removal occurs and removal of forests lead to dry of forests lead to dry wastelandswastelands

Nearby bodies of water Nearby bodies of water because soil no longer because soil no longer covered by forest, it covered by forest, it becomes stripped away by becomes stripped away by rain or snowrain or snow

Washed-out soil raises Washed-out soil raises riverbeds, which leads to riverbeds, which leads to flooding, clogs reservoirs, flooding, clogs reservoirs, and shortens life of damsand shortens life of dams

Also contributes to Also contributes to formation of new islands, formation of new islands, which depletes coastal which depletes coastal fisheriesfisheries

Many insect, animal, and Many insect, animal, and plant species have become plant species have become extinct or endangered due extinct or endangered due to deforestationto deforestation

Deforestation AffectsDeforestation Affects

Canada’s ForestsCanada’s Forests

Canada has:Canada has: ¼ of the world’s ¼ of the world’s

temperate temperate deciduous coastal deciduous coastal forestforest

1/3 of world’s 1/3 of world’s boreal coniferous boreal coniferous forestforest

Virtually all of the Virtually all of the world’s old growth world’s old growth pinepine

Decline of Canada’s Forests due toDecline of Canada’s Forests due to Forest firesForest fires Industrial Industrial

developmentdevelopment LoggingLogging Pine Beetle Pine Beetle

EpidemicEpidemic• Largely due to Largely due to

global warmingglobal warming• Winters not cold Winters not cold

enough to kill enough to kill themthem

DesertificationDesertification

DesertificationDesertification Expansion of deserts Expansion of deserts

due to due to mismanagement of the mismanagement of the land in agricultureland in agriculture

Using too much Using too much irrigation and artificial irrigation and artificial fertilizers to grow food fertilizers to grow food out of season can make out of season can make soils too salty to soils too salty to continue to grow cropscontinue to grow crops

Farmland can become Farmland can become a wasteland or desert a wasteland or desert on which very little can on which very little can grow or survivegrow or survive

DesertificationDesertification process whereby the productivity of drought- process whereby the productivity of drought-

prone land decreases because of a variety of prone land decreases because of a variety of factors including:factors including:

overgrazing (poor rangeland management), overgrazing (poor rangeland management), poor irrigation (waterlogging and salinization),poor irrigation (waterlogging and salinization), deforestation, deforestation, Over-cultivation, Over-cultivation, drought, drought, soil erosion, soil erosion, chemical action chemical action and other practices. and other practices.

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environmental concerns. air pollution pollutants in the atmosphere contribute to global warming and...

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global warmingsome

clean drinking water

movement of colder water

greenhouse effect

greenhouse gas emissionscanada

arctic communities

arctic animalsglobal

earths surface