With reference to "water vapour”, which of the following statements is/are correct? 1. It is a gas, the amount of which decreases with altitude. 2. Its percentage is maximum at the poles. Select the answer using the code given below:

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UPSC Question: With reference to "water vapour”, which of the following sta...

With reference to "water vapour”, which of the following statements is/are correct?

It is a gas, the amount of which decreases with altitude.
Its percentage is maximum at the poles. Select the answer using the code given below: