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nitrogen

Correct answer....laughing gas is not nitrogen (N2). It is nitrous oxide N20.
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Monday, January 21, 2008
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One of the main concerns about expanding rates of economic growth focuses on the effects of congestion, pollution and carbon emissions on the environment. Economic growth in China and India raises fears that the resulting environmental damage could have serious impacts on us all. Other observers say that it is hypocritical for those in the developed world to preach to those trying to develop their economies.Economic growth is the loss of ancient ways of life and cultures. As countries industrialise, natural resources can be lost as more land is sought. The loss of huge areas of the Brazilian rainforest to cattle-ranching is an example of this effect.

Other adverse effects could be

  • The 'one size fits all' view of economic development prevents subtle differences in the routes chosen to development.
  • The search for faster economic growth may prevent countries concentrating on social goals such as care for the elderly or children.
  • The acceptance of materialism as a general goal in life.
  • The homogenised global culture that some observers say has arisen.
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Saturday, September 29, 2007
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Human activity is increasing the concentration of greenhouse gases in the atmosphere at a rate that has probably never been seen before in the planet's history. There is no serious scientific disagreement or debate on this point. Prior to the start of the Industrial Revolution, the levels of carbon dioxide in the atmosphere were about 280 parts per million by volume (ppmv). Current levels are about 370 ppmv. The concentration of carbon dioxide and other key greenhouse gases in our atmosphere today is higher than at any time in the past 650,000 years, and probably higher than in the past 20 million years.
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Sunday, September 23, 2007
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 High-density n- type Complimentary Metal Oxide Silicon field effect transistor.

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Thursday, September 06, 2007
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Rain forest cover 6% of Earth's surface. This forest absorbs carbon-di- oxide from the atmosphere thus consuming a major part of  Green house gas.
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Monday, August 27, 2007
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