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  1. Which of the following is the best indicator of the actual amount of water vapour in the air?

    2. A.

     Air temperature
    B.

     Saturation vapour pressure
    C.

     Relative humidity
    D.

     Dew point temperature

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    Answer : Option D

    Explanation :

    Dew point is a good indicator of the air's actual water vapour content, unlike relative humidity, which takes the air's temperature into account. High dew point indicates high water vapour content; low dew point indicates low water vapour content.

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