If carbon-14 goes through 2 half lives what percentage of the original mass would remain p. s earth science sucks so help pls

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Rotenone is an insecticide that is toxic

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

When rutherford performed his metal foil experiment, he was surprised that most of the alpha particles