Fact 1: Zinc has a positive impact on the healing of wounds.

Fact 2: Wounds A wound is an injury to the skin and underlying soft tissues.

Given the two facts above, answer the question "What does zinc have a positive impact on?" with the following options: 
- Most plants
 - genetic material
 - water conservation
 - lowered energy cost
 - injury to the skin
 - consumers
 - circulatory systems
 - nutrients


 

     injury to the skin    