World Geography
The imaginary line on the earth's surface, which closely follows the 180o meridian, is called the

International Date Line
Tropic of Cancer
Equator
Prime Meridian

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World Geography
Which among the following statements is/are correct about the Thermosphere?It lies upto an altitude of 80 km from the earth’s surface.It contains electrically charged particles known as ions.The temperature here starts increasing with heights.The International Space Station and other satellites orbit in this layer.Select the correct code from the options given below:

Only 1, 3 & 4
Only 2, 3 & 4
Only 3 & 4
1, 2, 3 & 4

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