Fact 1: Excretion is the process of removing wastes and excess water from the body.

Fact 2: Normally, zinc leaves the body in wastes.

Given the two facts above, answer the question "How does Zinc usually leave the body?" with the following options: 
- irradiation
 - A drug.
 - burning coal
 - Excretion
 - physical removal
 - vomit
 - an ion
 - evaporation


 

    Excretion     