____________________is a measure of the actual amount of water vapour in a particular sample of air: measured as a partial pressure.
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Borosilicate glass wear is used in microwave oven because
Bubbles of air rise up through liquids due to
Light travels fastest in
_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.
In the equation of motion 2as = v2 - u2, s represents _________________.
An Odometer is an instrument used to measure ____ in automobiles.
Humidity is a measure of the _______________.