Which one of the following gases constitutes the major portion of the atmosphere ?

_________________ is located above the mesopause.

Name the lowermost layer of the atmosphere.

Water vapour content _____________ from the equater towards the poles.

Which atmospheric layer contains ozone layer?

Name the layer of atmosphere above the stratopause.

Atmospheric layer important for human beings is :

Name the layer of atmosphere above the tropopause.

Name the gas which is largely responsible for the green house effect.

Name of zone separating the troposphere from the stratosphere ?