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In the absence of green house effect what would be the mean temperature of earth?

$\begin{array}{1 1}(a)\;-16^{\large\circ}C&(b)\;-18^{\large\circ}C\\(c)\;-12^{\large\circ}C&(d)\;-14^{\large\circ}C\end{array}$

1 Answer

Scientists believe that in the absence of the greenhouse effect, Earth's surface temperature would average about −0.4°F (−18°C),
Hence (b) is the correct answer.
answered Jan 20, 2014 by sreemathi.v
edited Nov 16, 2017 by sharmaaparna1