SCIENCE
ENVIRONMENTAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1984
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1981
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1997
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1974
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Detailed explanation-1: -In the scientific journal Nature on May 16, 1985, three scientists from the British Antarctic Survey announce their detection of abnormally low levels of ozone over the South Pole.
Detailed explanation-2: -The discovery of the Antarctic ozone hole was first announced in a paper by British Antarctic Survey’s Joe Farman, Brian Gardiner and Jonathan Shanklin, which appeared in the journal Nature in May 1985.
Detailed explanation-3: -Without the ozone layer, complex life on Earth would not exist. In the 1980s, a team of scientists shocked the world when they detected a hole in the layer.
Detailed explanation-4: -Describe how ozone over Antarctica changed during the period from 1975 to 1985? In 1975 there were lots of CFCs. In 1985, it started going down.
Detailed explanation-5: -The deepest ozone hole occurred in 1994, when concentrations fell to just 73 DU on September 30.