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

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World Geography
The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun
ultraviolet rays from the sun
None of these
infrared rays from the sun

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