MCQOPTIONS
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				| 1. | 
                                    The average density of the outer-most layer (zone)- that is crust- of the earth is: | 
                            
| A. | 1.2 to 5.0 | 
| B. | 2.4 to 5.0 | 
| C. | 2.1 to 3.0 | 
| D. | 2.8 to 3.0 | 
| Answer» E. | |