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
1, 2, 3 & 4
Only 3 & 4

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World Geography
Which among the following statements is/are correct about Dust particles in the Earth’s atmosphere?Higher concentration of dust particles is found in equatorial and polar regionsThey are generally found in the lower layers of the atmosphereSelect the correct code from the options given below:

Only 2
Both 1 & 2
Only 1
Neither 1 & 2

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