42 Q4. Without greenhouse gases, the average temperature of the Earth's surface would be about A. -23.5°C B. -18°C - CORRECT C. 2°C D. 7.5°C Q5. Why is climate change caused by excess greenhouse gases and a big carbon footprint so important? (Choose ALL the correct answers) A. Because it causes heat waves that can damage crops and livestock. - CORRECT B. Because it decreases sea level and might cause loss of marine habitats C. Because the associated increased air pollution is linked to health problems. - CORRECT D. All the above Q6. Carbon footprint is the total greenhouse gas (GHG) emissions caused by an individual, event, organization, service, place or product, expressed as carbon dioxide equivalent, and A. It includes only carbon dioxide B. It includes also other gases like oxygen (O2) and helium (He) C. It includes also other gases like nitrous oxide (N2O) and Hydrofluorocarbons (HFCs) - CORRECT D. None of the above Q7. Which of the following affirmations is correct for a typical 40g portion of edible protein? A. Farmed salmon has a higher carbon footprint than Pork B. Chicken has a higher carbon footprint than Beef C. Pork has less carbon footprint than Chicken and higher than Farmed Salmon D. None of the above - CORRECT Q8. A standard LED light bulb last approximately A. The same as an incandescent lamp B. 10-15 times more than an incandescent lamp - CORRECT C. 50-100 times more than an incandescent lamp
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