The scientific view is that the increase in global temperature should not exceed 2oC above preindustrial level, If the global temperature increases beyond 3oC above the pre-industrial level, what can be its possible impact/impacts on the world ?
1. Terrestrial biosphere tends toward a net carbon source.
2. Widespread coral mortality will occur.
3. All the global wetlands will permanently disappear.
4. Cultivation of cereals will not be possible anywhere in the world.
Select the correct answer using the code given below:
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A.
1 only
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B.
1 and 2 only
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C.
2,3 and 4
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D.
1,2,3 and 4
Correct Answer:
B. 1 and 2 only
Explanation:
The IPCC report indicates that a temperature rise of 3ºC or higher could transform the terrestrial biosphere into a net source of carbon. Additionally, global warming exceeding 2ºC above pre-industrial levels is expected to cause extensive coral reef deaths worldwide.
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