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Regarding the ozone layer, consider the following statements:
1. Ozone (O3) is a molecule formed by three atoms of oxygen.
2. Ozone shields the surface of the earth from ultraviolet radiation from the Sun.
3. Human synthesized chemicals such as chlorofluorocarbons (CFCs) have started declining the amount of ozone.
Which of the statements given above is/are correct?
  • a)
    1 Only
  • b)
    2 and 3 Only
  • c)
    1, 2 and 3
  • d)
    1 and 2 Only
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Regarding the ozone layer, consider the following statements:1. Ozone...
  • Ozone (O3) is a molecule formed by three atoms of oxygen. Ozone is a deadly poison.
  • However, at the higher levels of the atmosphere, ozone performs an essential function. It shields the surface of the earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms, for example, it is known to cause skin cancer in human beings.
  • The amount of ozone in the atmosphere began to drop sharply in the 1980s. This decrease has been linked to synthetic chemicals like chlorofluorocarbons (CFCs) which are used as refrigerants and in fire extinguishers. In 1987, the United Nations Environment Programme (UNEP) succeeded in forging an agreement to freeze CFC production at 1986 levels.
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Regarding the ozone layer, consider the following statements:1. Ozone (O3) is a molecule formed by three atoms of oxygen.2. Ozone shields the surface of the earth from ultraviolet radiation from the Sun.3. Human synthesized chemicals such as chlorofluorocarbons (CFCs) have started declining the amount of ozone.Which of the statements given above is/are correct?a) 1 Onlyb) 2 and 3 Onlyc) 1, 2 and 3d) 1 and 2 OnlyCorrect answer is option 'C'. Can you explain this answer?
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