why are there two skins on a orange

Question: why are there two skins on a orange
- Keywords:
  oranges,
  skin
Asked by 242fddk47 to Yvonne on 7 Nov 2017.
- Yvonne Lenighan answered on 7 Nov 2017:
  
  Hello!
  
  The outside skin is tough and protects the fruit.. The inside skin then separates the orange into its juicy skin.. The white layer within the outside skin and between the segments is called the ‘pith’

Question: why are there two skins on a orange