MCQ Methane Emissions and Climate Change Concerns Questions with Answers

1. What percentage reduction in methane emissions have nearly 160 countries committed to achieve by 2030 from 2020 levels?

1) 20%
2) 25%
3) 30%
4) 35%

2. Over a 20-year period, how many times more impactful is methane compared to CO2?

1) 60 times
2) 70 times
3) 80 times
4) 90 times

3. What fraction of global methane emissions comes from natural sources?

1) One-fourth
2) One-third
3) One-half
4) Two-thirds

4. How much has the Atlantic Meridional Overturning Circulation (AMOC) weakened since 1950?

1) 10%
2) 15%
3) 20%
4) 25%

5. What increase in emissions has private aviation seen over five years?

1) 36%
2) 40%
3) 46%
4) 50%

6. What is the average annual carbon emission from LULUCF?

1) 0.9 billion tonnes
2) 1.0 billion tonnes
3) 1.1 billion tonnes
4) 1.2 billion tonnes

7. How long does methane typically remain in the atmosphere?

1) 5 years
2) About a decade
3) 15 years
4) 20 years

8. What percentage of global emissions come from China, the United States, and India combined?

1) 40%
2) 50%
3) 60%
4) 70%

9. In what timeframe could the remaining carbon budget be exhausted without important reductions?

1) 4 years
2) 5 years
3) 6 years
4) 7 years

10. By how much have human-caused methane emissions increased in the last two decades?

1) 15%
2) 20%
3) 25%
4) 30%

11. What critical warming threshold may the world have surpassed?

1) 1.0 degrees Celsius
2) 1.5 degrees Celsius
3) 2.0 degrees Celsius
4) 2.5 degrees Celsius

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12. What category did Hurricane Milton reach in just one day from being a tropical storm?

1) Category 1
2) Category 2
3) Category 3
4) Category 4

13. Which sector is primarily focused on for methane emission mitigation efforts?

1) Agriculture
2) Oil and gas
3) Waste management
4) Transportation

14. What type of analysis do scientists use to differentiate between biological and industrial methane sources?

1) Carbon dating
2) Isotope signatures
3) Molecular analysis
4) Chemical composition

15. Where are most private flights concentrated?

1) Europe
2) Asia
3) United States
4) Middle East

16. Which of these is NOT mentioned as a natural source of methane?

1) Wetlands
2) Permafrost
3) Peat bogs
4) Volcanoes

17. What is the main purpose of the FAIRR initiative?

1) Address climate change through sustainable agricultural practices
2) Regulate private aviation emissions
3) Monitor ocean temperatures
4) Study coral bleaching

18. What type of records were compared in recent research suggesting accelerated global warming?

1) Tree rings
2) Antarctic ice cores
3) Satellite data
4) Ocean temperature logs

19. What is the primary focus of COP29?

1) Ocean conservation
2) Biodiversity protection
3) Climate change and emissions reduction
4) Renewable energy development

20. Which of these sectors contributes to methane emissions?

1) Agriculture
2) Fossil fuels
3) Waste management
4) All of the above

21. What is the main advantage of reducing methane emissions compared to CO2?

1) Quicker climate benefits
2) Lower cost
3) Easier to implement
4) More permanent effects

22. What is a key function of coral ecosystems?

1) Carbon storage
2) Weather regulation
3) Coastal protection
4) Climate control

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23. What does LULUCF stand for?

1) Land Usage and Living Urban Community Factors
2) Land-use, land-use change, and forestry
3) Large Urban Land Use Conservation Force
4) Land Usage and Logging Under Climate Factors

24. What is the primary function of the AMOC?

1) Regulating climate through water circulation
2) Monitoring carbon emissions
3) Tracking methane levels
4) Measuring sea level rise

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