51.
The chemically inactive gas present in the atmosphere is ________

52.
In which layer, temperature increases dramatically?

53.
What is the major role of a greenhouse gas that contributes to temperature rise of the Earth's surface?

54.
Temperature generally decreases towards the poles because ________

55.
Consider the following statements:
1. Troposphere varies in its thickness between equator and poles.
2. Stratosphere does not experience Normal Lapse Rate.
3. Ozone layer occurs in the Mesosphere.
4. Ionosphere lies between Stratosphere and Mesosphere
Which of these statements are correct?

56.
Excess carbon dioxide in the atmosphere due to pollution will cause

57.
Atmospheric pressure exerted on earth is due to ________

58.
Which one of the following statements is correct?
Hurricanes ________

59.
Rain shadow effect is associated with

60.
Which one of the following layers of the atmosphere is responsible for the deflection of radio waves?

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