8. To estimate past temperatures scientists do not use A. ice-cores B. tree ring

Question

8. To estimate past temperatures scientists do not use A. ice-cores B. tree rings C plankton D. buried pollen E. greenhouse gases 19. The major source of nitrous oxide since the start of the Industrial Revolution has been: A. deforestation B. use of inorganic fertilisers C. rice paddy cultivation D. use of fossil fuels E all correct 20. The October 2013 report from the IPCC predicts that: A. Lack of water will be a central issue in farming in the years ahead B. Poornationswill facemoreintense famines duetotemperature andprecipitationchanges C. Extreme weather will greatly affect human infrastructure D. Morepeoplewill diefrom flooding duetorising sea-levels E. All the above are correct ozone in the troposphere and ozone inthe stratosphere. 21. There is evidence that humans are_ A. decreasing... increasing B. increasing....decreasing C. decreasing...decreasing D. increasing.. . increasing E all the above 22. The main discussion at the COP 22 conference in Marrakech in Nov. 2016 centered on: A. revising the Paris agreement B. setting the agenda for future COP sessions C. revising some of the Paris agreement's objectives D. developing the rulebook technical details which will make the Paris agreement 23. The main goal of COP21 in Paris in Dec. 2015 is to: A. achieve a new international agreement on climate applicable to all countries with the aim of keeping global waming below 2 degrees Celsius B. achieve a new international agreement on elimate applicable to all countries with the aim of keeping global warning below 5 degrees Celsius C. raise money to the tune of $100 billion to assist developing nations. D. agree on cutting air pollution levels to acceptable standards

Explanation / Answer

18. C. plankton

19. E. all correct

20. E. All of the above are correct

21. B. increasing, decreasing

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