World Geography
The temperature needed to keep the earth's surface and the atmosphere in thermal equilibrium is called

global temperature
the mean global surface temperature
the surface temperature
equilibrium temperature

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World Geography
Which among the following statements is/are correct about the stratosphere?The Stratosphere is the layer of the Earth’s atmosphere which lies beyond the mesosphere.It extends up to an altitude of 50 kilometres from the earth’s surface.This layer is ideal for flying aeroplaneSelect the correct code from the options given below:

Only 1 & 2
1, 2 & 3
Only 2 & 3
Only 1

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