81.
The cold and dense air blowing down the mountain slope during the night is known as ________

82.
The layer of atmosphere which reflects radio waves is

83.
Venus has atmosphere made up of

84.
The core of the Earth is also known as

85.
The capacity of the Atmosphere to hold water vapour

86.
Northern part of Australia is typified by which one of the following?

87.
Mist is a result of which one of the following?

88.
The instrument used for measuring relative humidity in air is ________

89.
The hot dry local winds that blow on the eastern side of the Alps Mountain are known as ________

90.
The contact of two air masses differing sharply in humidity originates:

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