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How is the radioactive decay of an element used to determine the age of a rock layer?
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Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in
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Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?
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In what part of the body does the most muscle activity happen?
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How is the radioactive decay of an element used to determine the age of a rock layer?...
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