Conserving Earth s Resources P.Lobosco Earth s Resource

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Conserving Earths Resources

• P.Lobosco

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Earths Resources

• Today, Earths population continues to grow even
  as the resources shrink.

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Fossil Fuels and Minerals

• Fossil fuels and minerals are nonrenewable
  resources. Fossil fuels and minerals can be
  conserved by saving energy and by recycling.

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Energy Conservation

• Use energy efficient light bulbs.
• Turn off lights when they are not needed.
• Turn off television when you are not watching it.
• Take a quick shower instead of a bath.
• Fix leaking faucets and pipes.
• Use the clothes washer and dryer only for full
  loads.
• Thaw frozen foods.

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Energy Conservation

• Cook the entire meal in the oven instead of using
  several burners.
• Make sure refrigerators and freezers are properly
  sealed.
• Set the thermostat as low as possible.
• Use the dishwasher only for full loads.
• Allow dishes to air dry.

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Energy Efficiency

• Conserve fossil fuels by using them more
  efficiently. More efficient cars use less
  gasoline. Smaller cars also use less gasoline.
  Adding 100 kilograms to the mass of a car
  increases its consumption of gasoline by 6 .
  Driving slowly also saves gasoline. Use public
  transportation. Walk or ride a bicycle.

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Recycling

• Keep minerals in usable form by recycling. If
  recycling becomes an accepted part of everyday
  life, existing mineral resources would last
  longer, less land would be dug up and destroyed
  in the search for new mineral resources. The
  solid-waste problem would also be reduced.
  Recycling also contributes to energy conservation.

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Pollution

• Pollution is the release in to the environment of
  substances than can change the environment for
  the worse. If nothing is done to prevent
  pollution, the problem will only get worse as the
  human population increases. All parts of the
  environment are interrelated. Anything that
  damages one part can also damage other parts.

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Protecting the Environment

• People can prevent pollution by using energy
  wisely and be discarding wastes safely.

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Safeguarding the Air

• Gases and particles given off when fossil fuels
  are burned are called emissions. Some
  pollution-causing emissions are given off. These
  emissions include the poisonous gas carbon
  monoxide as well as nitrous oxides and sulfur
  oxides which cause acid rain when they react with
  water vapor in the air.

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Reduction of Polluted Emissions

• Improve emission control devices. Scrubbers can
  be used to wash suspended particles and sulfur
  oxides out of smokestack. Car emissions can be
  reduced by catalytic converters. A catalytic
  converter changes the hydrocarbons and carbon
  monoxide into carbon dioxide and water vapor.
  Pass a stronger Clean Air Act.

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Greenhouse Effect

• The carbon dioxide released into the air by
  automobiles and the burning of fossil fuels by
  industries contributes to the green house effect.
  The greenhouse effect has resulted in rising
  temperatures that are affecting the Earths
  climate resulting in melting ice caps an d more
  turbulent weather. Find and use alternative fuels.

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Safeguarding our Water

• In 1972 and 1974, the United States Congress
  passed two laws to fight water pollution. They
  were the Clean Water Act of 1972 and the Safe
  Drinking Water Act of 1974. Both of these laws
  were intended to stop the flow of untreated
  wastes into waterways form point sources. Point
  sources include sewers and pipes through which
  wastes are discharged.

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Sewage Treatment Plants

• Towns and cities were not required to build
  sewage-treatment plants or to improve existing
  plants. Such plants clean wastewater before it
  is discharged in to waterways. Similar treatment
  plants purify water for drinking. Industries
  were now required to clean their wastewater
  before releasing it into lakes and streams.

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Nonpoint Sources

• Nonpoint sources of water pollution include
  sanitary landfills that ooze poisonous liquids
  and industrial waste ponds that leak into the
  surrounding ground. Nonpoint sources also include
  illegally dumped hazardous wastes and runoff of
  pesticides and fertilizers. This are most harmful
  to the environment. They are also difficult to
  find and clean.

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Solutions

• Hazardous waste dumps must be checked carefully
  for leakage. Whenever possible hazardous waste
  should be properly disposed off at the
  factory.This is often difficult and expensive.