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Konu: ÜDS 2007-Mart-Fen

  1. #1
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    ÜDS 2007-Mart-Fen

    The concentrations of methane (CH4) and carbon dioxide (CO2) gases in the atmosphere have both risen dramatically since the start of the Industrial Revolution. However, unlike its more familiar greenhouse-gas cousin, atmospheric methane has recently stopped increasing in abundance. This development wasn’t entirely unanticipated, given that the rate of increase has been slowing for at least a quarter-century. The recent stabilization of methane levels is something that some scientists are trying very hard to explain. Methane has many sources. Some are natural, such as wetlands and plants, and some are the consequences of modern society, such as landfills and wastewater treatment. Methane is destroyed principally by its reaction with the hydroxyl radical (OH) in the lower atmosphere. One theory about the stabilization of methane levels is that deforestation has reduced the number of plants contributing to atmospheric methane. Another idea is that an increase in the prevalence of tropical thunderstorms may have raised the amounts of the various nitrogen oxides high in the atmosphere. There, these gases have the side effect of boosting the production of OH, which in turn acts to destroy methane.


    72. It can be inferred from the passage that ----.

    A) atmospheric methane is produced only by human activity
    B) the greenhouse effect of methane is not as widely-known as that of carbon dioxide
    C) scientists expect atmospheric methane levels to continue rising
    D) deforestation contributes to increasing atmospheric methane levels
    E) carbon dioxide is not as important as methane in terms of causing global warming

    Doğru cevabı ve parçadaki yerini gösterebilir misiniz?


  2. #2
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    Alıntı Nebukadnezar isimli üyeden alıntı Mesajı göster
    The concentrations of methane (CH4) and carbon dioxide (CO2) gases in the atmosphere have both risen dramatically since the start of the Industrial Revolution. However, unlike its more familiar greenhouse-gas cousin, atmospheric methane has recently stopped increasing in abundance. This development wasn’t entirely unanticipated, given that the rate of increase has been slowing for at least a quarter-century. The recent stabilization of methane levels is something that some scientists are trying very hard to explain. Methane has many sources. Some are natural, such as wetlands and plants, and some are the consequences of modern society, such as landfills and wastewater treatment. Methane is destroyed principally by its reaction with the hydroxyl radical (OH) in the lower atmosphere. One theory about the stabilization of methane levels is that deforestation has reduced the number of plants contributing to atmospheric methane. Another idea is that an increase in the prevalence of tropical thunderstorms may have raised the amounts of the various nitrogen oxides high in the atmosphere. There, these gases have the side effect of boosting the production of OH, which in turn acts to destroy methane.


    72. It can be inferred from the passage that ----.

    A) atmospheric methane is produced only by human activity
    B) the greenhouse effect of methane is not as widely-known as that of carbon dioxide
    C) scientists expect atmospheric methane levels to continue rising
    D) deforestation contributes to increasing atmospheric methane levels
    E) carbon dioxide is not as important as methane in terms of causing global warming

    Doğru cevabı ve parçadaki yerini gösterebilir misiniz?

    scientist dememiş ama parçanın geneline bakıldığında o da çıkıyor. bir şey unanticapeted sa tersi expect edilir... cevabı antonym kullanarak vermiş.

  3. #3
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    Doğru cevap C değil...

  4. #4
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    cevap B.şimdi az işim var.birazdan açıklıcam

  5. #5
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    Methane has many sources. Some are natural, such as wetlands and plants, and some are the consequences of modern society, such as landfills and wastewater treatment. bu cümleden dolayı A değil..

    B de widely known diye bir şeyden bahsetmiş ama bu konu üzerine kıyaslama da göremedim...

    E de olmaz carbon dioxide ce global warming alakası yok zaten.

    One theory about the stabilization of methane levels is that deforestation has reduced the number of plants contributing to atmospheric methane. bu cümleden dolayı d de değil çünkü methane seviyesinin sabit olmasınının teorisini açıklıyor.
    ama su contributing kafama takıldı the number of plants which contributes to... mu yoksa by contributing mi ??

  6. #6
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    [QUOTE=Nebukadnezar;1103423]The concentrations of methane (CH4) and carbon dioxide (CO2) gases in the atmosphere have both risen dramatically since the start of the Industrial Revolution. However, unlike its more familiar greenhouse-gas cousin, atmospheric methane has recently stopped increasing in abundance. This development wasn’t entirely unanticipated, given that the rate of increase has been slowing for at least a quarter-century. The recent stabilization of methane levels is something that some scientists are trying very hard to explain. Methane has many sources. Some are natural, such as wetlands and plants, and some are the consequences of modern society, such as landfills and wastewater treatment. Methane is destroyed principally by its reaction with the hydroxyl radical (OH) in the lower atmosphere. One theory about the stabilization of methane levels is that deforestation has reduced the number of plants contributing to atmospheric methane. Another idea is that an increase in the prevalence of tropical thunderstorms may have raised the amounts of the various nitrogen oxides high in the atmosphere. There, these gases have the side effect of boosting the production of OH, which in turn acts to destroy methane.


    72. It can be inferred from the passage that ----.

    A) atmospheric methane is produced only by human activity
    B) the greenhouse effect of methane is not as widely-known as that of carbon dioxide
    C) scientists expect atmospheric methane levels to continue rising
    D) deforestation contributes to increasing atmospheric methane levels
    E) carbon dioxide is not as important as methane in terms of causing global warming

    Doğru cevabı ve parçadaki yerini gösterebilir misiniz?[/QUOTE

    Anladığım kadarıyla D şıkkı tam çeviremedim.

  7. #7
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    However, unlike its more familiar greenhouse-gas cousin, atmospheric methane has recently stopped increasing in abundance.The recent stabilization of methane levels is something that some scientists are trying very hard to explain

    bu cümleden B seçeneğine gdiiyoruz arkadaşlar.cevap B. kırmızı ile belirttiğim cümle carbondioxide dan bahsediyo,unlike kelimesi ile kıyaslama yapıyo. infer yani çıkarım sorusu olduğundan cevap b. umaraım bu açıklama yeterli gelmiştir arkadaşlar. başarılar.

  8. #8
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    doru cevap nedir Nebukadnezar?

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    Çok merak ettim ÖSYM'den cevabı buldum.
    B şıkkıymış.
    Öyle doğru cevap mı olur ya...

    metanın sera etkisi karbondioksidinki kadar geniş bilinmiyor diyor.

    Parçada ise durdu diyor. Karbondioksidin aksine metanın miktarındaki artma durmuş.

    Hımm artış durunca geniş bilgi de alamıoruz mu...
    Konu sevi_sevi tarafından (06-05-11 Saat 21:44 ) değiştirilmiştir. Sebep: Anca anladım da:)

  10. #10
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    Alıntı Nebukadnezar isimli üyeden alıntı Mesajı göster
    The concentrations of methane (CH4) and carbon dioxide (CO2) gases in the atmosphere have both risen dramatically since the start of the Industrial Revolution. However, unlike its more familiar greenhouse-gas cousin, atmospheric methane has recently stopped increasing in abundance. This development wasn’t entirely unanticipated, given that the rate of increase has been slowing for at least a quarter-century. The recent stabilization of methane levels is something that some scientists are trying very hard to explain. Methane has many sources. Some are natural, such as wetlands and plants, and some are the consequences of modern society, such as landfills and wastewater treatment. Methane is destroyed principally by its reaction with the hydroxyl radical (OH) in the lower atmosphere. One theory about the stabilization of methane levels is that deforestation has reduced the number of plants contributing to atmospheric methane. Another idea is that an increase in the prevalence of tropical thunderstorms may have raised the amounts of the various nitrogen oxides high in the atmosphere. There, these gases have the side effect of boosting the production of OH, which in turn acts to destroy methane.


    72. It can be inferred from the passage that ----.

    A) atmospheric methane is produced only by human activity
    B) the greenhouse effect of methane is not as widely-known as that of carbon dioxide
    C) scientists expect atmospheric methane levels to continue rising
    D) deforestation contributes to increasing atmospheric methane levels
    E) carbon dioxide is not as important as methane in terms of causing global warming

    Doğru cevabı ve parçadaki yerini gösterebilir misiniz?
    Alıntı sevi_sevi isimli üyeden alıntı Mesajı göster
    Çok merak ettim ÖSYM'den cevabı buldum.
    B şıkkıymış.
    Öyle doğru cevap mı olur ya...

    metanın sera etkisi karbondioksidinki kadar geniş bilinmiyor diyor.

    Parçada ise durdu diyor. Karbondioksidin aksine metanın miktarındaki artma durmuş.

    Hımm artış durunca geniş bilgi de alamıoruz mu...

    Olur olur... Altı çizili bölüme gidilmiş... ÖSYM zaman zaman yapıyor bu insafsızlığı...

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