The amount of water vapour in the air is the same everywhere.
Water vapour - It is the constituent of air that is present in different amounts and plays a major role as a greenhouse gas.
Explanation - The amount of water vapour is different in different places and it changes with climatic conditions and the region. for example - water vapour will be more in monsoon season as compared to summer and places like deserts show very less moisture content.
The composition of air is not the same everywhere, it varies according to different climatic conditions and geographical locations.
Therefore, the given statement is false.