Final answer:
Running a comb through your hair causes the comb to become charged, and the small pieces of paper to be attracted to it.
Step-by-step explanation:
When you run a comb through your hair, it picks up small pieces of paper because of electric charge transfer.
The comb becomes charged as the friction between the comb and your hair causes a transfer of electrons. The comb becomes negatively charged and the small pieces of paper become attracted to the comb due to the forces of electrostatic attraction.
This phenomenon is an example of polarization, where the atoms and molecules in the neutral pieces of paper become temporarily polarized by the electric field of the charged comb, leading to their attraction.