The age of a rock based on what layer it is in
<span>Hello to answer your question fully.
<span>B.The amounts of carbon-14 and nitrogen in sedimentary rocks are measured.</span>
Radioactive dating is a method of dating rocks and minerals using radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks.
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<span>The proteins amino acid sequence..</span>
