Multiple choice

Ozone holes exist

  1. over Antarctica
  2. over Arctic
  3. over Tibet

Which of the above is/are correct?

  1. Only 1

  2. 1, 2 and 3

  3. 1 and 2

  4. 2 and 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

On March 15, 2011, a record ozone layer loss was observed, with about half of the ozone present over the Arctic having been destroyed. In 2006, a 2.5 million square kilometer ozone hole was detected over Tibet. Again in 2011 a ozone hole appeared over mountainous regions of Tibet, Xinjiang, Qinghai and the Hindu Kush. The discovery of the Antarctic ozone hole by British Antarctic Survey scientists Farman, Gardiner and Shanklin was announced in a paper in Nature as early as in May 1985.

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