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

Fact 2: Wound healing Wound healing is a critical aspect of surgery.

Given the two facts above, answer the question "what can zinc have a positive impact on?" with the following options: 
- humans
 - plants
 - Heart rate
 - surgery
 - cells
 - food
 - animals
 - the skin


 

    surgery     