Which of the following is NOT a consequence of global warming?
- A.Rise in sea level
- B.Retreat of glaciers
- C.Coral bleaching
- D.Increased ultraviolet radiation reaching the surface
Correct answer
Explanation
The correct answer is D, increased ultraviolet radiation reaching the surface. That is the consequence of ozone depletion, a separate problem caused by chlorofluorocarbons thinning the ozone layer in the stratosphere, and it is addressed by the Montreal Protocol. Mixing the two problems is the single commonest error in this part of the syllabus.
Option A, the rise in sea level, follows both from the expansion of sea water as it warms and from the melting of land ice. Option B, the retreat of glaciers, is observed in the Himalaya, the Alps and the Andes and threatens the flow of rivers fed by them. Option C, coral bleaching, happens when unusually warm water makes corals expel the algae that live within them and give them colour, leaving them white and liable to die.
Read the full article: Climate Change and Global Warming: Notes for Exams
Practice Questions
View allWhen carbon dioxide is increased in the atmosphere, it leads to ________.
- A.Global warming
- B.Air pressure
- C.Conservation
- D.Rains
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Carbon dioxide is a greenhouse gas: it lets in the short wave radiation of the sun but absorbs a part of the long wave infrared radiation that the warmed earth sends back, and radiates it downwards again.
Read the full explanation →The Intergovernmental Panel on Climate Change (IPCC) was established in 1988 by which two organisations?
- A.UNESCO and FAO
- B.The World Meteorological Organization and the United Nations Environment Programme
- C.The World Bank and the IMF
- D.WHO and the United Nations Development Programme
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The two bodies set up the panel in 1988 so that governments would have a single authoritative summary of what science says about climate change.
Read the full explanation →The United Nations Framework Convention on Climate Change was adopted at which conference?
- A.The Stockholm Conference, 1972
- B.The Earth Summit at Rio de Janeiro, 1992
- C.The Johannesburg Summit, 2002
- D.The Copenhagen Conference, 2009
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The United Nations Conference on Environment and Development, popularly called the Earth Summit, produced the Framework Convention on Climate Change along with the Convention on Biological Diversity and Agenda 21.
Read the full explanation →The Kyoto Protocol, which set binding emission targets, was adopted in which year?
- A.1987
- B.1992
- C.1997
- D.2005
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The Kyoto Protocol was adopted at the third Conference of the Parties held in the Japanese city of Kyoto in 1997, and it came into force in 2005 after enough countries had ratified it.
Read the full explanation →Under the Paris Agreement of 2015, countries agreed to hold the rise in global average temperature to:
- A.Well below 2 degrees Celsius above pre-industrial levels, pursuing efforts towards 1.5 degrees
- B.Exactly 3 degrees Celsius above present levels
- C.Below 5 degrees Celsius by the year 2100
- D.No numerical limit at all
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The Paris Agreement, adopted at the twenty-first Conference of the Parties in 2015 and in force from November 2016, commits its parties to holding the increase in the global average temperature to well below two degrees Celsius above pre-industrial levels and to pursuing efforts to limit the increase to one…
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