SO245 Exam 5.pdf - Social Impact of Technology SO245 Exam 5...

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SO245 Exam 5.pdf

Question 2   of 40 5.0 / 5.0 Points Chlorofluorocarbons ( CFCs ) , the main culprit in the depletion of atmospheric ozone , are being replaced with hydrofluorocarbons ( HFCs ) , thus greatly reducing ozone layer depletion . What is the only drawback to this strategy ? 
 A. HFCs give off an unpleasant odor .
 
Question 3   of 40 5.0 / 5.0 Points As demonstrated by the Keeling curve , carbon dioxide concentration in the atmosphere was expected to reach ____ _ _ _ _ __ ppm by 2010 . But , in fact , carbon concentration exceeded that level in 2013 and is still rising .
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Question 4   of 40 5.0 / 5.0 Points _ _________ is both our planet ’s thermostat and the world ’s chief gree nhouse gas .
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Question 5   of 40 5.0 / 5.0 Points The ozone layer contains about __________ percent of atmospheric ozone .
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Question 7   of 40 5.0 / 5.0 Points Disruption of the __________ cycle will lead to unpredictable impacts on human well - being because of this cycle ’s vital role in regulating global climate patterns .
A.  nitrogen
B.  carbon
C.  phosphorous 
Question 8   of 40 5.0 / 5.0 Points Which of the following is a biotic as opposed to an abiotic factor in an ecological system ?
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Question 9   of 40 5.0 / 5.0 Points All of the following have been linked to damage caused by UVB radiation EXCEPT :
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Question 10   of 40 5.0 / 5.0 Points The foremost emitters of methane , a greenhouse gas , are :
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Question 11   of 40 5.0 / 5.0 Points Phytoplankton , aside from being the base of the oceanic food chain , produce __________ percent of our planet ’s atmospheric oxygen . 
 A. 20
 
Question 12   of 40 5.0 / 5.0 Points __________ experts maintain that there is still time to address environmental problems and change our course toward a sustainable future .
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Question 13   of 40 5.0 / 5.0 Points Most of our weather takes place in the :
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Social Impact of Technology SO245 Exam 5 Part 1 of 2 - 95.0/ 100.0 Points Question 1 of 40 5.0/ 5.0 Points Which of these atmospheric layers enables radio transmissions? A. Troposphere B. Stratosphere C. Ionosphere D. Thermosphere
Question 2 of 40 5.0/ 5.0 Points Chlorofluorocarbons (CFCs), the main culprit in the depletion of atmospheric ozone, are being replaced with hydrofluorocarbons (HFCs), thus greatly reducing ozone layer depletion. What is the only drawback to this strategy?
B. HFCs are potent greenhouse gases. C. HFCs are more expensive to produce than CFCs. D. HFCs are toxic to wildlife. Question 3 of 40 5.0/ 5.0 Points As demonstrated by the Keeling curve, carbon dioxide concentration in the atmosphere was expected to reach __________ ppm by 2010. But, in fact, carbon concentration exceeded that level in 2013 and is still rising.
Question 4 of 40 5.0/ 5.0 Points __________ is both our planet’s thermostat and the world’s chief gree nhouse gas.
Question 5 of 40 5.0/ 5.0 Points The ozone layer contains about __________ percent of atmospheric ozone. A. 60 B. 75 C. 90 D. 99
Question 6 of 40
5.0/ 5.0 Points The taiga ecoregions make up the largest contiguous forests on the planet and constitute __________ percent of all of Ear th’s forests.
Question 7 of 40 5.0/ 5.0 Points Disruption of the __________ cycle will lead to unpredictable impacts on human well-being because of this cycle’s vital role in regulating global climate patterns.
D. water Question 8 of 40 5.0/ 5.0 Points Which of the following is a biotic as opposed to an abiotic factor in an ecological system?
Question 9 of 40 5.0/ 5.0 Points All of the following have been linked to damage caused by UVB radiation EXCEPT: A. destruction of DNA. B. melanoma and premature aging.
C. basal cell and squamous cell carcinomas. D. severe sunburn.

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