The scientific view is that the increase in global temperature should not exceed 2° C above pre-industrial level. If the global temperature increases beyond 3° C above the pre-industrial level, what can be its possible impact/impacts on the world?

1. 1.Terrestrial biosphere tends toward a net carbon source.
2. 2.Widespread coral mortality will occur.
3. 3.All the global wetlands will permanently disappear.
4. 4.Cultivation of cereals will not be possible anywhere in the world.

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