MCQOPTIONS
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				| 1. | 
                                    The most of the natural phenomena happens in which one of the following layers of the atmosphere? | 
                            
| A. | (a) Stratosphere | 
| B. | (b) Exosphere | 
| C. | (c) Troposphere | 
| D. | (d) All of these | 
| E. | (e) None of these | 
| Answer» D. (d) All of these | |