World Geography
The ozone layer at high altitude contains

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

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World Geography
Which among the following impact craters of the Earth is/are correctly matched?Lonar crater – Tajikistan Kaali crater – IndiaKarakul crater – EstoniaSelect the correct code from the options given below:

Only 2
None of these
Only 2 & 3
Only 3

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