Earth's crustal rocks have a higher density compared to the Earth as a whole.

Answer the following statement true (T) or false (F)


False

Due to mantle convection and plate tectonics, lower-density elements have accumulated in Earth's crust over time. Thus, crustal rocks are of lower density compared to the Earth as a whole. 

Environmental & Atmospheric Sciences

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Which are closer together: the two nuclei within potassium fluoride, KF, or the two nuclei within molecular fluorine, F2?

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The beginning of the Phanerozoic is marked by the ________

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Environmental & Atmospheric Sciences