Zinc has a positive impact on the healing of wounds.
An incised wound is a clean cut.
Zinc has a positive impact on the healing of cuts.
What kind of impact does zinc have on healing cuts?
Options:
  * heat energy
  * lowered energy cost
  * no impact
  * major threat to health
  * it causes infection
  * a positive impact
  * circulatory systems
  * a negative impact