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Ozone Layer
‫.‪• Crops also seem to be damaged by extra UV‬‬
‫‪Some forms of Soya bean, an increasingly‬‬
‫‪important corp, have suffered a 25 percent‬‬
‫‪decrease in yield when their exposure to UV B‬‬
‫.‪rays was increased by 25 percent‬‬
‫يبدو المحاصيل أيضا إلى أن‬
‫تتضرر من جراء العشعة فوق‬
‫البنفسجية اضافية. لقد عانى بعض‬
‫أعشكال فول الصويا، وهي عشركة‬
‫ذات أهمية متزايدة، انخفاضا بنسبة‬
‫52٪ في العائد عندما تمت زيادة‬
‫‪ B‬تعرضهم للعشعة فوق البنفسجية‬
‫.بنسبة 52 في المئة‬
• Finally, and possibly most worrying is the
possibility that in the future the ozone layer
will start to let very harmful UV-C rays reach
the surface of the Earth.
‫وأخيرا، وربما الثكثر إثارة للقلق هو احتمال أنه في‬
‫المستقبل سوف تبدأ طبقة الوزون للسماح العشعة فوق‬
‫-البنفسجية‬C ‫.الضارة جدا تصل إلى سطح الرض‬
‫‪• At the moment the‬‬
‫‪layer stops all UV-C‬‬
‫‪from reaching us. We‬‬
‫‪know that UV-C can‬‬
‫‪alter and destroy DNA‬‬
‫.‪and proteins‬‬
‫• في لحظة توقف ثكل طبقة‬
‫‪ UV-C‬من الوصول إلينا.‬
‫ونحن نعلم أن العشعة فوق‬
‫البنفسجية-‪ C‬يمكن أن يغير‬
‫وتدمير الحمض النووي‬
‫والبروتينات.‬
‫‪• We can only guess at the consequences for‬‬
‫‪the human race if our DNA was exposed to‬‬
‫.‪UV-C for long periods‬‬
‫يمكننا تخمين فقط في العواقب للجنس البشري إذا تعرضت الحمض‬
‫يمكننا تخمين فقط في العواقب للجنس البشري إذا تعرضت الحمض‬
‫.لفترات طويلة ‪-C‬النووي للعشعة فوق البنفسجية‬
‫.لفترات طويلة ‪-C‬النووي للعشعة فوق البنفسجية‬
Questions :
• Answer true or false :
• 1) Some forms of Soya bean have suffered a 20
percent decrease in yield when their exposure to
UV B rays was increased by 25 percent . (false)
• 2) The possibility that in the future the ozone
layer will start to let useful UV-C rays reach the
(false)
surface of the Earth.
• 3) The hole in the ozone layer is increasing day by
day .
True
Questions :
• Answer true or false :
• 1) Some forms of Soya bean have suffered a 20
percent decrease in yield when their exposure to
UV B rays was increased by 25 percent . (false)
• 2) The possibility that in the future the ozone
layer will start to let useful UV-C rays reach the
(false)
surface of the Earth.
• 3) The hole in the ozone layer is increasing day by
day .
True

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Ozone Layer

  • 2. ‫.‪• Crops also seem to be damaged by extra UV‬‬ ‫‪Some forms of Soya bean, an increasingly‬‬ ‫‪important corp, have suffered a 25 percent‬‬ ‫‪decrease in yield when their exposure to UV B‬‬ ‫.‪rays was increased by 25 percent‬‬ ‫يبدو المحاصيل أيضا إلى أن‬ ‫تتضرر من جراء العشعة فوق‬ ‫البنفسجية اضافية. لقد عانى بعض‬ ‫أعشكال فول الصويا، وهي عشركة‬ ‫ذات أهمية متزايدة، انخفاضا بنسبة‬ ‫52٪ في العائد عندما تمت زيادة‬ ‫‪ B‬تعرضهم للعشعة فوق البنفسجية‬ ‫.بنسبة 52 في المئة‬
  • 3. • Finally, and possibly most worrying is the possibility that in the future the ozone layer will start to let very harmful UV-C rays reach the surface of the Earth. ‫وأخيرا، وربما الثكثر إثارة للقلق هو احتمال أنه في‬ ‫المستقبل سوف تبدأ طبقة الوزون للسماح العشعة فوق‬ ‫-البنفسجية‬C ‫.الضارة جدا تصل إلى سطح الرض‬
  • 4. ‫‪• At the moment the‬‬ ‫‪layer stops all UV-C‬‬ ‫‪from reaching us. We‬‬ ‫‪know that UV-C can‬‬ ‫‪alter and destroy DNA‬‬ ‫.‪and proteins‬‬ ‫• في لحظة توقف ثكل طبقة‬ ‫‪ UV-C‬من الوصول إلينا.‬ ‫ونحن نعلم أن العشعة فوق‬ ‫البنفسجية-‪ C‬يمكن أن يغير‬ ‫وتدمير الحمض النووي‬ ‫والبروتينات.‬
  • 5. ‫‪• We can only guess at the consequences for‬‬ ‫‪the human race if our DNA was exposed to‬‬ ‫.‪UV-C for long periods‬‬ ‫يمكننا تخمين فقط في العواقب للجنس البشري إذا تعرضت الحمض‬ ‫يمكننا تخمين فقط في العواقب للجنس البشري إذا تعرضت الحمض‬ ‫.لفترات طويلة ‪-C‬النووي للعشعة فوق البنفسجية‬ ‫.لفترات طويلة ‪-C‬النووي للعشعة فوق البنفسجية‬
  • 6. Questions : • Answer true or false : • 1) Some forms of Soya bean have suffered a 20 percent decrease in yield when their exposure to UV B rays was increased by 25 percent . (false) • 2) The possibility that in the future the ozone layer will start to let useful UV-C rays reach the (false) surface of the Earth. • 3) The hole in the ozone layer is increasing day by day . True
  • 7. Questions : • Answer true or false : • 1) Some forms of Soya bean have suffered a 20 percent decrease in yield when their exposure to UV B rays was increased by 25 percent . (false) • 2) The possibility that in the future the ozone layer will start to let useful UV-C rays reach the (false) surface of the Earth. • 3) The hole in the ozone layer is increasing day by day . True