How have scientists determined the earth's core is composed of iron and nickel ? Scientists have determined the composition of earth's core by using radiometric dating to examine meteorites.

Scientists are not able to accurately determine what the earth's core is composed of.

Scientists have taken samples from the oceanic crust to discover the composition of earth's core.

Scientists have determined the compositions of earth's core by using current technology to reach earth's core, at depths of 1,802 miles, and examining extracted samples.

Question

How have scientists determined the earth's core is composed of iron and nickel ?                                       Scientists have determined the composition of earth's core by using radiometric dating to examine meteorites.

Scientists are not able to accurately determine what the earth's core is composed of.
	
Scientists have taken samples from the oceanic crust to discover the composition of earth's core.

Scientists have determined the compositions of earth's core by using current technology to reach earth's core, at depths of 1,802 miles, and examining extracted samples.

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