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WAEC - Geography (2019 - No. 15)

The density of the earth's crust varies from
17.0 g/cm3 to 19.5 g/cm3
8.0 g/cm3 to 10.9 g/cm3
4.5 g/cm3 to 7.0 g/cm3
2.5 g/cm3 to 3.3 g/cm3

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