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Kelly Hughes is writing a report on a campaign on child rights that she has worked on.She is currently working on a certain section of the report which involves writing the objective of the project,summarizing its results,its recommendations,and thanking people for the help she has had.Which section of the report is Hughes working on?
Evolution
The method through which various types of life are believed to have evolved and branched out from ancestral forms throughout Earth's history.
Radioisotopes
Unstable isotopes that spontaneously emit radiation; also called radioactive isotopes.
Half-Life
The time required for half the atoms of a radioactive substance to decay or for a drug or other substance to lose half its pharmacologic, physiologic, or radiologic activity.
Potassium-40
A radioactive isotope of potassium used in dating geological materials, as it decays into argon-40 over a known period of time.
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