It seems nobody dared give the answers to the questionnaire on An inconvenient truth. I hope the reason was shyness and not laziness. In any case, here are the answers:
1. the image of the Earth taken from the Apollo 8.
2. the atmosphere
3. the thickness of varnish
4. it keeps the temperature of the earth between certain boundaries, making it apt for living.
5. it produces global warming.
6. they give a precise idea of temperature and CO2 concentration year by year.
7. they run parallel: the more CO2, the warmer temperature is.
8. in the last 14 years.
9. it increases too.
10. it has tried up to almost nothing.
11. more than 90%.
12. climate
13. 20 feet/ 6 metres
14. 1. population; 2. scientific and technological revolution; 3. our way of thinking.
15. USA
16. USA and Australia
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