World Geography
The ionosphere includes

thermosphere and exosphere
thermosphere
mesosphere
thermosphere, exosphere and mesosphere

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World Geography
Which among the following period in the demographic history of India is called the Period of Stable Population?

1891 to 1921
1921 to 1951
1951 to 1981
1981 to Present

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World Geography
Which among the following statements is/are correct about Fronts?The boundary zone when two different type of air masses meet is called a Front.Differences in terms of tem­perature, humidity, precipitation, cloudiness, and wind direction are experienced along different fronts.Occluded front is formed when cold front over­takes warm front and warm air is completely displaced from the ground surfaceSelect the correct code from the options given below:

1, 2 & 3
None of these
Only 1 & 2
Only 1

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