Science and Technology in Society – How do science and technology affect the quality of our lives?...
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Science and Technology in Society – How do science and technology affect the quality of our lives?
• 9.9 - Some materials can be recycled, but others accumulate in the environment and may affect the balance of the Earth systems.
• New technologies and changes in lifestyle can have positive and/or negative effects on the environment.
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D 25
• Explain how land development, transportation options and consumption of resources may affect the environment.
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• New England was once all forests.• Deforestation was necessary for living,
transportation, and agriculture.
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• People prefer the automobile over mass transportation.
• Most high-level economic countries use far more than they produce. This creates a lot of waste.
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D26. Describe human efforts to reduce the consumption of raw materials and improve air
and water quality.
Ways to have a positive impact on the environment…
Can you think of some?
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Sloan Valve CompanyChicago IL
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Pressing the lever down produces a regular 1.6-gallon flush, while lifting the lever up produces a 1.1 gallon
flush
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Composting:the rotten truth
Anne KolaczykPurdue University Master Gardener
©2006Anne Kolaczyk
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CompostingComposting is the transformation of organic material (plant matter) through decomposition into a soil-like material called compost.
Invertebrates (insects and earthworms), and microorganisms (bacteria and fungi) help in this transformation.
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Why do it Environmentally responsible
Keeps biodegradable waste out of landfills and sewage plants
Alternative to burning Gives you a vibrant garden
without chemical fertilizers Saves money Learning tool
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What it involves Adding ingredients Maintaining proper temperature Turning Maintaining moisture Harvesting
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Homemade Three bins are best
One to fill One that’s “cooking” One to turn others into or to draw from
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What you can compost Yard waste Kitchen scraps Newspaper Cardboard
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Care of compost Passive
Let sit Takes months and months
Active Turn often Keep moist (H2O 40-60% of weight) Have proper ratio of C:N (30:1) 2-6 weeks (depending on ingredients)
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Let’s get realConcerns Solutions
I don’t have room Use commercial bin
It takes too long Maintain proper conditions Cut up large pieces
It smells Not if you maintain C:N ratio
Temps too low to kill diseases, fungi, weed seeds
Use local community composting facility for problem pieces, compost the rest
Attracts animals Bury food waste in center
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Uses Early stages as mulch
Keeps weeds from growing Helps retain moisture Beneficial minerals go into soil
Later stages for soil amending Enriches soil Helps with moisture retention
Removes/reduces need for chemical fertilizers that leach into our ground water
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66.20% Burned to produce electricity24.40% Recycled (Does not include Bottle recycling)6.08% Disposed of Out of State3.32% Placed in Landfills
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How do you enforce this?