Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The scientific view is that the increase in global temperature should not exceed 2 °C above the 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. 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.

• A. 1 only
• B. 1 and 2 only
• C. 2, 3 and 4 only
• D. 1, 2, 3 and 4

Answer 1

The correct option is B 1 and 2 only

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> If the global temperature increases beyond above the pre-industrial level then Terrestrial biosphere tends toward a net carbon source and widespread coral mortality will occur.
Other impacts are:
Upto 30% of species at increasing rise of extinction
ecosystem changes due to weakening of the meridional overturning circulation.