GLOBAL WARMING

   Climate change is any substantial change in Earth’s climate that lasts for an extended period of time.  Global warming refers to climate change that causes an increase in the average temperature of the lower atmosphere.  Global warming can have many different causes, but it is most commonly associated with human interference, specifically the release of excessive amounts of greenhouse gases. (EPA, 2006)

    Greenhouse gases, such as carbon dioxide (CO₂), methane (CH₄), water vapor, and fluorinated gases, act like a greenhouse around the earth.  This means that they let the heat from the Sun into the atmosphere, but do not allow the heat to escape back into space.  The more greenhouse gases there are, the larger the percentage of heat that is trapped inside the earth’s atmosphere.  The earth could not exist in its present state (that is, with life) without the presence of some naturally occurring greenhouse gases, such as CO₂, CH₄, and water vapor. Without any greenhouse gases no heat would be trapped in atmosphere, so the earth would be extremely cold. (NASA, 2002)
    Naturally occurring greenhouse gases (not fluorinated gases) are good in naturally occurring amounts; it’s when people start contributing excessive amounts of them that greenhouse gases become a problem.  With excessive greenhouse gas buildup, the earth’s atmosphere warms to unnatural temperatures which causes, among other things, sea level to rise.  Global warming also causes sea surface temperatures to rise, precipitation patterns to change, etc.. (NASA, 2002)

ADVANTAGES OF SINGAPORE AIRLINES

SIA used excellence technology and achievement. The seat is very comfort and can make our passengers sleep better. It also has the excellent service from Singapore girl that very beautiful, and friendly. The Singapore girl also called as stewardess for SIA, wearing the uniforms of Batik Malaysia. SIA have the good service for booking and SIA operates the new fleet planes and modern, until produce the safety for its passengers. In addition, the SIA also is the first airlines that offer to economy class the choice of meals, free drinks and headphone to passengers. Not only that’s, SIA always try to make one matter that difference from other airlines. We can see that through the use of entertainment in the airplane. The passengers enjoy the audio-video with nearly 200 entertainment choices. SIA increases all classes of cabins simultaneously and difference from other airlines that increases their cabin gradually.  Furthermore, when Asian was in economic crisis, SIA invest 100 million on Space Beds. That is the facilities which provide business class passengers with seats that can be lowered to almost 180 degrees.