TWE寫作素材(2)——Pollution

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1.Earth Day
    Earth Day was started in 1970. It was organized to help raise environmental awareness to the general public.It helped spark the creation of the Environmental Protection Agency.
    By the year 2000 there will be6.3 billion people on the planet. There was almost twice as much land devoted to urban life in 1990 than there ws in 1970.
    The Earth Day provides a special day to remind the population to take care of the Earth.
    2.Going Green
    When Jeffrey Hollander launched his seventh generation live of products ten years ago, the market for nontoxic household cleaners and recycled paper products was virtually nonexistent. Today, it's a booming businness.
    The niche is environmentally friendly,or so called green products.
    A green product is one that has less impact on the environment. So that means that it might use less resources, it may create less waste and be more evergy efficient for example.
    An average home might have an evergy bill of 1300 dollars a year. If all the products, all the appliances in the home were Energy Star, that home could save about 30% a year, and for the average home in the U.S. that might be around $400 a year.
    3. Description of the earth:
    Earth means many things to the people who live on it. To a farmer, Earth is rich soil. To a road builder, Earth means mountains of hard rock. For a sailor, Earth is water as far as the eye can see. A pilot's view of Earth may include part of an ocean, a mountain, and patches of farmland. An astronaut speeding through space sees the Earth's round shape and the outline of lands and oceans.
    4. Car Pollution
    Today, there are more than 630 million cars in the world. U.S. drivers own a third of these vehicles, which in turn produce a third of the nation's greenhouse gases -- emissions (primarily carbon dioxide) that accumulate in our upper atmosphere and cause global warming. We're seeing the effects in weird weather, melting glaciers, and rising oceans that pose an immediate threat to many island nations.
    Refining, distributing, and burning a gallon of gasoline produces about 30 pounds of carbon dioxide. If every car in the U.S. were replaced by one that was 10 mpg more fuel-efficient, carbon dioxide emissions would be reduced by 250 million tons per year, and the nation's annual contribution to global warming would be cut by nearly 20 percent.
    Pollution
    The most serlous result of air pollution is from its harmful effect, on human
    health. Both gases and particuiates burn people's eyes and irritate the lungs.
    Particulates can settle in 1ungs and worsen such respiratory diseases as asthma and
    bronchitis. Some expers even beIieve that particulates may cause such diseases as
    cancer emphysema and pneumonla. '
    Air pollution also harm plans. Poisonoas gases in the air will turn into acid
    rain which spread over thou'ands of square kilometers and restric the growth and
    even,ually kill nearly all kinds of plants.
    Polluted air can corrode such hard and strong materials as concrete and steel .
    which are widely used in building houses and constructions. In some cities. statues
    and other sculptares and art obiects outdoors have dislntegrated as a result of
    erosion by polluted air.'
    But advance in controlling exhaust from automobiles has been limited. Filters
    used inare not efficient in absorbing poisonous gase. and particulates To reduce
    hazardous. experts resort to new types of engines and new fuel.. The idea and
    prototypes of engincs have long been proposed and tested. Fuel in the turbine engine
    can be burned almostly completely . producing more power, releasing less unburned
    hydrocarbons and almost no carbon monoxide
    The harnessing of the new energy
    With the increasing concern over hazardous environmental consequences caused by
    burn-ing fos.il fuel. fuel cells now win favor in Japan and the U. S. . Experts
    predict that fuel cellswill eventually replace nuclear plants in 20 to 30 years,
    supplying eiectricity to households.and they will be used in cars and in space
    stations, as the major engines. Researchers are working hard to reduce their volume
    and cost so that they can meet the requirements of future energy resources in
    prac,ical use
    Making use of tides and waves to produce electricity is feasible and
    economical. Many idieas have been proposed. for example, building a dam at the mouth
    of a bay to trap water in the bay when tbe tide comes and tben when it ebbs,
    driving turbines with that water to genterate electricity. To make use of the
    kinetic energy of waves, a series of buoys Linked together in rows offshore absorb
    kihetic energy when the waves push them back and forth.This incessant movement can
    drive hydraulic mackines to generate electricity.
    Turning wind power into electricity is nothing new, today wind-powered
    electrogenerator are commercially available. your home can have one installed on the
    roof. The machine will keep the current in the best orientation. It is equipped with
    rechargeable batteriest where electricity can be stored for use when the wind lulls.
    So you can have a cheap andsteady electricity suppLy from that contraption.
    the sun provides inexhaustible energy for all creatures on earth. In fact,
    except for nular energy. all fuel from which we obtain energy today came and comes
    from the sun. scintists predict that modern society wiU mainly rely on eolar nnergy
    in various ways in the next century.
    weigang,wang
    Along the Thames (environment protection)
    To develop a little the line of poet Edmund Spenser, who in the 16th century
    wrote," Sweet Thames run softly, till I end my song": it still runs softly
    enough,but could never be called sweet in any gustatory sense. If its brown-
    black color fails to sound sufficient warning we could, but will refrain
    from recalling the dreadful things that thames oarsmen say a mere mouthful
    will do to anyone who falls in.
    Environment Protection
    ------------------------------
    A sample and some useful data:
    Today, there are more than 630 million cars in the world. U.S. drivers own a
    third of these vehicles, which in turn produce a third of the nation's
    greenhouse gases -- emissions (primarily carbon dioxide) that accumulate in
    our upper atmosphere and cause global warming. We're seeing the effects in
    weird weather, melting glaciers, and rising oceans that pose an immediate
    threat to many island nations.
    Refining, distributing, and burning a gallon of gasoline produces about 30
    pounds of carbon dioxide. If every car in the U.S. were replaced by one that
    was 10 mpg more fuel-efficient, carbon dioxide emissions would be reduced by
    250 million tons per year, and the nation's annual contribution to global
    warming would be cut by nearly 20 percent.
    some description about earth:
    Earth means many things to the people who live on it. To a farmer, Earth is
    rich soil. To a road builder, Earth means mountains of hard rock. For a
    sailor, Earth is water as far as the eye can see. A pilot's view of Earth
    may include part of an ocean, a mountain, and patches of farmland. An
    astronaut speeding through space sees the Earth's round shape and the
    outline of lands and oceans.