Do Now 8/22/11
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Transcript of Do Now 8/22/11
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Do Now 8/22/11
• What do you think living sustainably means?
*Please take out the summary of your notes and your binder with dividers. I need to check these*
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Label Dividers
1.) Do Nows/Learning Logs/Reflections2.) Notes3.) Labs/Projects4.) Assessments5.) Readings/Current Events
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Human Impacts and Sustainability
8/22/11
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What is sustainability?
• A way of living which balances meeting our own needs, without limiting the ability of future generations to meet their needs.
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What are three principles to help us live sustainably?
• Solar Energy• Biodiversity• Chemical/Nutrient Cycling
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What are the 3 components of sustainability?
• Economy• Environment (Natural Capital)• Society
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What is Natural Capital?
• Natural Capital = Natural resources + Natural Services– Natural resources=materials and energy in nature
that are essential or useful to humans– Natural Services= process in nature that benefit us• i.e. purification of air, renewal of topsoil
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What are the 3 types of natural resources?
• Perpetual– i.e. the sun
• Renewable– i.e. forests, grasslands, fish populations,
freshwater, fresh air, topsoil• Nonrenewable– i.e. energy- oil, coal, metals- copper, aluminum,
non-metals- salt and sand
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What is Economic Development?
• An effort to use economic growth to improve living standards, measured by average economic income. – More developed countries• 19% of the population, 88% of all resources, 75% of the
world’s pollution and waste– Less developed countries• 81% of the population, 12% of all resources, 25% of
pollution and waste
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What is Environmental Degradation?
• Wasting, Depleting and degrading the earth’s natural capital.
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What is pollution?
• A chemical, noise, heat or other agent in the environment that is harmful to the health, survival or activities of humans or other organisms.
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How is pollution categorized?
• Point sources= single identifiable sources– i.e. smokestack, coal burning plant
• Non-point sources = disperse, difficult to identify– i.e. runoff fertilizers in a river, pesticides blown in
the wind
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How is pollution categorized?
• Biodegradable = pollutants a natural process can break down over time– i.e. Sewage, newspapers
• Non-degradable = pollutants a natural process can Not break down over time– i.e. lead, mercury, arsenic
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What are the 2 ways we deal with pollution?
• Output control= clean up• Input control = prevention
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What are the 3 types of property?
• Private property = individuals or companies own it.
• Common property = large groups own it.• Open-access resources = owned by no
one and available for use by anyone– i.e. atmosphere, underground water
supplies, open ocean and its marine life
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What is the tragedy of the commons?
• When people exploit an open-access resource because they think – If I don’t use this resource, someone else will. The little bit that I use or pollute is not enough to matter and it’s renewable anyway.
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What is an ecological footprint?
• A measure of how much a person consumes resources and produces waste and pollution, expressed in area of land.
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How is an ecological footprint a measure of sustainability?
• If a country’s total ecological footprint is greater than its biological capacity to replish renewable resources and absorb pollutants and waste = ecological deficit – NOT sustainable
Ecological footprint>biological capacity=ecological deificit
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Summary