MCQOPTIONS
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				| 1. | 
                                    The 99% mass of earth atmosphere is confines to the height of: | 
                            
| A. | 16 Km from the Earth s surface | 
| B. | 32 Km from the Earth s surface | 
| C. | 64 Km from the Earth s surface | 
| D. | 72 Km from the Earth s surface | 
| Answer» C. 64 Km from the Earth s surface | |