1.
Which of the following is not true about incineration?

2.
Most of the mass of the atmosphere is contained in

3.
Which of the following is the outermost layer of the atmosphere?

4.
In which of the following regions do aircraft fly?

5.
Brilliant light displays occurring in the northern hemisphere due to particles from the sun that enter ionosphere are called

6.
Which layer is located above the stratosphere

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