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Why might iron meteorites not exactly match Earth’s core’s estimated composition?

Which of the following is a possible origin of Ne? Choose all that apply.

Continental lithosphere is characterized by which of the following? Choose all that apply.

What is the correct order of differentiation of the Solid Earth 

At what temperature will Forsterite melt, assuming pressure stays at 50 kBar?

____ are rocks or sediments containing economically valuable minerals and elements at concentrations higher than background levels.

What are ways scientists can estimate the cores composition? Choose all that apply

Mercury, Venus, Earth, and Mars have higher concentrations of silicates then the other planets in our solar system

Mg-rich and Fe-rich silicates make up the bulk composition of which of the following? Choose all that apply.

X-ray crystallography would be a suitable means to determine the chemical composition of which of the following samples?