MCQOPTIONS
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				| 1. | 
                                    The Earth's core is made up of very heavy material mostly constituted by: | 
                            
| A. | Iron and Aluminum | 
| B. | Aluminum and Nickel | 
| C. | Nickel and Iron | 
| D. | Nickel and Lead | 
| Answer» D. Nickel and Lead | |