In which layer of the atmosphere the molecules are broken into charged particles called ions?

The temperature of which layer of the atmosphere very high?

Which region of the earth has maximum temperature?

The density of air decreases when altitude-

Which layer of the atmosphere reflects the radio wave-' towards the earth?

If there is no atmosphere what would be the color of sky?

At which region the temperature difference is maximum?

Which region receives the minimum insulation?

Which layer of the atmosphere helps in radio transmission?

The temperature at a place depends on its-