Which of the following describes a magnetic field?
a) the area where the magnet is
b) the area where the domains are
c) the area where the magnet is the strongest
d) the area where the magnetic force is exerted

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material