World Geography
The ozone layer at high altitude contains

atomic oxygen (O) and ordinary oxygen (O2)
only ozone (O3)
mixture of atomic oxygen (O), ordinary oxygen (O2) and Ozone (O3)
only ordinary oxygen (O2)

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World Geography
The original landmass, pangola split into

Laurissa in the south and Godwanaland in the north
Laurissa in the east and Godwanaland in the west
Laurissa in the west and Godwanaland in the east
Laurissa in the north and Godwanaland in the south

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