According to IPCC, in order to restrict global mean temperature rise to 28C by the year 2050, global energy related CO2 emissions (reference year 2005) need to be cut down by the year 2050 by :

[A] ~ 50%

[B] ~ 90%

[C] ~ 40%

[D] ~ 30%

Answer & Explanation
Answer: ~ 50%

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