Quote:
Originally Posted by BestTimesNow
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Question 3:
The main cause of Global Warming is:
a) pollution from factories and automobiles
b) orbital eccentricities of Earth and variations in the Sun's output
c) the Greenhouse Effect
If you take it to mean the global warming that is occurring now, rather than historical global warming on a geological time scale, then (c) is the correct answer, not (b) as they suggest.
Question 7:
Carbon dioxide from coal-fired power plants damages forests.
True
False
Too much CO2, independent of the source will, of itself, damage some forests. Particularly the Amazon rainforest will collapse from too much CO2 because many species respond to more CO2 with less transpiration, leading to a collapse in the rainfall.
Also climate change from the CO2 threatens forests. The Boreal forest is under threat. Canada in particular has lost large areas of spruce to the pine beetle whose range has been increasing northwards.
Question 8:
Which answer below provides the best explanation for the following temperature record?

a) Industrial pollution from factories, power plants, and cars caused global warming
b) Natural variations in global temperatures may occur in roughly 500-years cycles
c) Global cooling occurred as a result of the Renaissance Period
Their answer is probably right for
that temperature record, but
the temperature record looks nothing like that chart at all.
Here are 12 different peer reviewed temperature reconstructions from the scientific community:
The rise in the last 50 years is due to (a), except that industrial pollution itself causes a negative forcing. (Not counting greenhouse emissions).
Question 9:
Which of the following is not true about an increasing greenhouse effect?
a) the consensus of scientists is that the problem warrants drastic action
b) nighttime temperatures may increase, but daytime temperatures will not
c) the coldest, driest regions of the planet will warm first
They get this wrong too. It is not true that daytime temperatures will not increase. Daytime temperatures have been, and do increase with the greenhouse effect. Night-time temperatures certainly increase more, but daytime temperature increase too.
(a) Is probably the most true. The IPCC reports at least said the immediate action could avoid or ameliorate many of the impacts. Of course that was immediate action last year.