1. What is the purpose of carbon credits?

2. What is the main source of methane emissions?

3. Which country is currently the largest emitter of CO₂?

4. What sector is NOT currently included in the EU ETS?

5. What is the estimated carbon footprint of an average U.S. household?

6. What is Phase 4 of the EU ETS?

7. Switching from a beef-based meal to a vegetarian one once a week can save CO₂ equivalent to driving how many miles?

8. What percentage of EU emissions are covered by the EU ETS?

9. When was the EU ETS established?

10. What gas is primarily responsible for the greenhouse effect?

11. Which household appliance contributes significantly to carbon emissions?

12. How often are emission allowances reviewed under the EU ETS?

13. What percentage of a typical U.S. household's carbon footprint comes from food?

14. Which sector releases the most CO₂ when fossil fuels are burned?

15. Which of these dietary choices has the lowest carbon footprint?

16. The carbon cycle is the process of?

17. Who monitors carbon credit projects for accuracy?

18. Trees absorb CO₂ through a process called?

19. Which industry sector buys the most carbon credits?

20. Which type of entity can create a carbon offset project?

21. Which organization monitors compliance with the EU ETS?

22. Which greenhouse gas has the highest global warming potential (GWP)?

23. What percentage of food emissions comes from transportation?

24. What is the main greenhouse gas emitted from landfills?

25. What is the average CO₂ equivalent emitted per mile by a domestic commercial flight?

26. How much CO₂ does the average car emit per mile driven?

27. Which gas has the highest global warming potential (GWP)?

28. Which greenhouse gas is primarily emitted from rice paddies?

29. Which type of project is common in carbon offset programs?

30. What is the primary goal of a carbon offset project?

31. Which country recently linked its emissions trading system to the EU ETS?

32. Which diet change could lower your carbon footprint significantly?

33. Who are the main buyers in voluntary carbon markets?

34. What is a cap-and-trade system?

35. What mechanism does the EU ETS use to allocate emission allowances?

36. Which greenhouse gas is NOT regulated by the EU ETS?

37. How much CO₂ does a gallon of gasoline emit when burned?

38. Which process removes CO₂ from the atmosphere?

39. Carbon footprint measures the amount of CO₂ generated by?

40. What does "banking" refer to in the context of the EU ETS?